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Create an accountA selection of headtube lug for frame builders. Manufactured in Taiwan by Allotec, a foundry which makes steel frame parts using the lost wax investment casting method. Please see diagram and details spec in the manufacturer's catalog.
F331
Tube:25.4x31.8mm
Angle: 73.5°
F330
Tube:28.6x31.8mm
Angle: 60°
F340
Tube:31.8x31.8mm
Angle: 60°