Material: Aluminum Alloy for Body, Steel for BB Axis

Number of Holes: 32/36 Holes

Bearing: front hub:2 bearing, Rear hub:2 bearing

Open gear: front hub 100mm, rear hub 135mm

Support: 6/7/8/9/10 speed

Weight: Front hub: 350g, Rear Hub: 405g.

Package Includes:

1 x Bicycle Rear Hub

1 x Quick Release Rod