This Flexhub is a hub with a 1/2mm keyed bore and a 0.501-0.503 in. with a 1/8mm keyway.
- General Info: All Flex Hubs fit all Flex Hub gears
- Hub Outside Geometry: 3/4 in. hex
- Hub Width: 0.400-0.410 in.
- Material: 12L14 steel
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