In case construction, corners are metal fittings mounted onto the outer corners of a flight case or transport case. Corners protect the edges from impact, reinforce the case shell and allow several cases to be stacked securely. In geometry, a corner — also called a vertex — is the point where two sides of a flat shape or three edges of a solid body meet. At LTT, the term "corners" refers to the durable steel and aluminium fittings used to build professional, road-ready cases for event technology.

What are the corners called?

Case corners are named by their shape and function. The most common types are ball corners (rounded corners for edge protection), stacking corners (interlocking male and female profiles for secure stacking) and medium or large corners (graded by size and load capacity). In geometry, a corner is also called a vertex or, in German, an Eckpunkt. In case construction at LTT, you choose the named type — ball, stacking or heavy-duty steel corner — that matches your specific build and load requirements.

What has many corners?

In geometry, shapes and bodies with many corners include the pentagon (5 corners) and the regular dodecahedron (20 corners, 12 faces and 30 edges). A cube has 8 corners where three edges meet, and a pyramid has 5 corners. Euler's polyhedron formula describes the relationship between the corners, edges and faces of convex polyhedra. In the case-construction world, a rectangular flight case has corners at each of its eight vertices — which is exactly why a standard case build requires eight protective corner fittings.

In geometry, a hexagon is a two-dimensional shape with 6 corners, where six straight sides meet. A triangular prism is a three-dimensional body that also has 6 corners. In case construction, a six-cornered arrangement is less common than the classic rectangular case, which has eight corners. If you are building a shaped or angled enclosure with six corners, you simply fit one protective corner to each vertex — choosing the corner type and size that matches the load and transport demands of your build.

What does Ecken mean in German?

"Ecken" is the German plural of "Ecke", which translates into English as "corners". Depending on context, Ecke can also mean edge, nook or angle. In geometry, an Ecke is the vertex where lines or edges meet. In the case-construction range at LTT, "Ecken" refers specifically to the metal corner fittings used to protect and reinforce flight cases and transport cases — the durable steel and aluminium parts you rivet onto the corners of a case shell.

What is the difference between a ball corner and a stacking corner?

A ball corner is a rounded fitting whose main job is to protect the outer corner of a case from impact and give a clean finish; it suits light to medium transport cases. A stacking corner comes as an interlocking pair — a male and a female profile — that engages when one case is placed on another, preventing the stack from sliding. Stacking corners are essential for touring cases and warehouse storage where cases are stacked several high. Many professional builds combine both types on the same case.

Which corner material should I buy, steel or aluminium?

Choose steel corners when load capacity and impact resistance matter most — for heavy touring cases and stacking applications, steel is the standard. Choose aluminium corners when weight matters, for example on fly cases that travel by air, since aluminium is lighter and naturally corrosion-resistant. Steel is heavier but far more resistant to deformation under load. As a manufacturer of both steel and aluminium parts, LTT can advise which corner material best suits your case load and transport scenario.

Which corners suit a professional touring flight case?

A professional touring flight case that is stacked and shipped frequently needs heavy-duty steel stacking corners, ideally powder-coated for corrosion and abrasion resistance. Use interlocking stacking corners on the top and bottom faces so cases lock together in a stack, and reinforce heavy loads with thicker steel corners fixed with plenty of rivets. Standard transport cases for occasional use can rely on simpler ball corners. At LTT you can combine the right corners with matching profiles, rivets and latches to build a robust, road-ready case.

Corners

Adam Hall Hardware 4112 Kugelecke klein dreischenklig 6-Loch

Adam Hall Hardware 4112 - Ball Corner small three-leg 6 holes

Ball Corner small three-leg 6 holes Ball Corner three-leg : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver • Material...

€0.67 *

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Adam Hall Hardware 4113 Kugelecke klein dreischenklig gekröpft 22 mm

Adam Hall Hardware 4113 - Ball Corner small three-leg cranked 22 mm

Ball Corner small three-leg cranked 22 mm Ball Corner three-leg : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver...

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€0.63 *

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Delivery time: 1-3 days

Delivery time: 1-3 days

Adam Hall Hardware 4114 Kugelecke klein mit integrierter L-Ecke

Adam Hall Hardware 4114 - Ball Corner small with integrated Corner Brace

Ball Corner small with integrated Corner Brace : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver • Material thickness: 1.2...

€0.75 *

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Adam Hall Hardware 41143 Kugelecke klein mit integrierter L-Ecke 37 mm gek

Adam Hall Hardware 41143 - Ball Corner small cranked 22 mm with integrated Corner Brace 37 mm

Ball Corner small cranked 22 mm with integrated Corner Brace 37 mm : Product type: Corners • Material: Steel • Surface: galvanized • Color: silver • Material thickness: 1.2 mm...

€0.75 *

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Adam Hall Hardware 4115 Kugelecke klein dreischenklig

Adam Hall Hardware 4115 - Ball Corner small three-leg

Ball Corner small three-leg Ball Corner three-leg : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver • Material thickness:...

€0.79 *

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Adam Hall Hardware 4117 Kugelecke mittel dreischenklig

Adam Hall Hardware 4117 - Ball Corner medium three-leg

Ball Corner medium three-leg Ball Corner three-leg : Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver • Material thickness: 1.2 mm • Mounting hole...

€1.04 *

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Adam Hall Hardware 4118 Kugelecke mittel mit integrierter L-Ecke

Adam Hall Hardware 4118 - Ball Corner medium with integrated Corner Brace

Ball Corner medium with integrated Corner Brace : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver • Material thickness:...

€1.05 *

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Adam Hall Hardware 41182 Kugelecke mittel mit integrierter L-Ecke gekröpft

Adam Hall Hardware 41182 - Ball Corner medium cranked 30 mm with integrated Corner Brace

Ball Corner medium cranked 30 mm with integrated Corner Brace : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver • Material...

€0.98 *

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Adam Hall Hardware 4119 Kugelecke mittel dreischenklig gekröpft 30 mm

Adam Hall Hardware 4119 - Ball Corner medium three-leg cranked 30 mm

Ball Corner medium three-leg cranked 30 mm Ball Corner three-leg : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver...

€1.08 *

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Adam Hall Hardware 4120 Kugelecke mittel dreischenklig

Adam Hall Hardware 4120 - Ball Corner Medium Three-Leg

Ball Corner Medium Three-Leg Ball Corner three-leg : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver • Material thickness:...

€0.90 *

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Adam Hall Hardware 41201 Kugelecke mittel mit integrierter L-Ecke 68 mm

Adam Hall Hardware 41201 - Ball Corner Medium with Integrated Corner Brace 68 mm

Ball Corner Medium with Integrated Corner Brace 68 mm : Product type: Corners • Material: Steel • Surface: galvanized • Color: silver • Material thickness: 1.5 mm...

€1.19 *

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Adam Hall Hardware 41202 Kugelecke mittel mit integrierter L-Ecke 68 mm ge

Adam Hall Hardware 41202 - Ball Corner Medium Cranked 30 mm with Integrated Corner Brace 68 mm

Ball Corner Medium Cranked 30 mm with Integrated Corner Brace 68 mm : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver...

€1.12 *

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Adam Hall Hardware 4121 Kugelecke mittel mit integrierter L-Ecke 40 mm

Adam Hall Hardware 4121 - Ball Corner Medium Cranked 30 mm with Integrated Corner Brace 40 mm

Ball Corner Medium Cranked 30 mm with Integrated Corner Brace 40 mm : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver...

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€1.15 *

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Availability:

Delivery time: 1-3 days

Delivery time: 1-3 days

Adam Hall Hardware 4126 Kugelecke mittel mit integrierter L-Ecke 40 mm gek

Adam Hall Hardware 4126 - Ball Corner Medium Cranked 30 mm with Integrated Corner Brace 40 mm

Ball Corner Medium Cranked 30 mm with Integrated Corner Brace 40 mm : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver...

€1.24 *

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Adam Hall Hardware 41262 Kugelecke mittel mit integrierter L-Ecke 42,5 mm

Adam Hall Hardware 41262 - Ball Corner Medium Cranked 30 mm with Integrated Corner Brace 42,5 mm

Ball Corner Medium Cranked 30 mm with Integrated Corner Brace 42,5 mm : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver...

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€1.24 *

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Availability:

Delivery time: 1-3 days

Delivery time: 1-3 days

Adam Hall Hardware 4127 Kugelecke mittel mit integrierter L-Ecke 47 mm

Adam Hall Hardware 4127 - Ball Corner Medium with Integrated Corner Brace 47 mm

Ball Corner Medium with Integrated Corner Brace 47 mm : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver • Material...

€1.23 *

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Adam Hall Hardware 4129 Kugelecke mittel mit integrierter L-Ecke 47 mm gek

Adam Hall Hardware 4129 - Ball Corner Medium Cranked 30 mm with integrated Corner Brace 47 mm

Ball Corner Medium Cranked 30 mm with integrated Corner Brace 47 mm : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanized • Color: silver...

€1.23 *

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Adam Hall Hardware 4040 BLK - L-Ecke klein galvanisiert, schwarz

Adam Hall Hardware 4040 BLK - L-corner small galvanised, black

L-corner small galvanised, black L-corner, black : Product type: Corner Braces • Material: Steel • Surface: chromium plated • Color: Black • Material thickness: 1.2 mm...

€0.78 *

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Adam Hall Hardware 40431 BLK - L-Ecke groß galvanisiert schwarz

Adam Hall Hardware 40431 BLK - L-corner large galvanised black

L-corner large galvanised black L-corner, black : Product type: Corner Braces • Material: Steel • Surface: galvanised • Color: Black • Material thickness: 1.2 mm • Mounting...

€1.14 *

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Adam Hall Hardware 4102 BLK - große Kugelecke mit Mulde galvanisiert, schwarz

Adam Hall Hardware 4102 BLK - large ball corner with trough galvanised, black

large ball corner with trough galvanised, black Ball corner three-legged stackable, black : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanised...

€4.32 *

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Adam Hall Hardware 4120 BLK - mittlere Kugelecke galvanisiert, schwarz

Adam Hall Hardware 4120 BLK - middle ball corner galvanised, black

middle ball corner galvanised, black Ball corner three-legged, black : Product type: Corners • Type: Ball corner • Material: Steel • Surface: galvanised • Color: Black...

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€2.98 *

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Availability:

Delivery time: 1-3 days

Delivery time: 1-3 days

Adam Hall Hardware 4122 BLK - Kugelecke mittel dreischenklig mit Stapelmulde, schwarz

Adam Hall Hardware 4122 BLK - Ball corner medium three-legged with stacking recess, black

Ball corner medium three-legged with stacking recess, black Ball corner three-legged stackable, black : Product type: Corners • Type: Ball corner • Material: Steel • Surface:...

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€3.44 *

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Availability:

Delivery time: 1-3 days

Delivery time: 1-3 days

Adam Hall Hardware 4113 BLK - Kugelecke klein, dreischenklig, gestuft für 6109, schwarz

Adam Hall Hardware 4113 BLK - Ball corner small, three-legged, stepped for 6109, black

Ball corner small, three-legged, stepped for 6109, black Small three-legged ball corner with offset for 22 mm edge protectors, black galvanised. Fixing holes with 4.2 mm diameter. : General...

€2.24 *

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Adam Hall Hardware 4000 BLK - Ecke quadratisch, klein, schwarz

Adam Hall Hardware 4000 BLK - Square case corner, small, black

Square case corner, small, black Small, square case corner made of galvanised steel, black. 37 mm in size, fixing holes with 5.2 mm diameter. : General Material: Steel • Coating: Galvanised...

€2.58 *

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