Speedline Parts 20MM TO 3/8" ( 10mm ) AXLE ADAPTER KIT
In BMX Racing, hubs have two different axle sizes (10mm or 20mm). As for forks, the hole to fix the wheel is different depending on the size of the hub axle. Speedline Parts makes it easier by creating an adapter axle that lets you reduce the size of your axle from 20mm to 10mm.
This only works with a 20mm front hub like those on the Speedline Killer Bee Wheelsets to adapt to a 3/8" Front Fork.
A very strong axle made entirely of 7075-T6 aluminum and CNC machined. A stiffness close to that of a standard 20mm axle. With this kit, you will be able to mount your wheel directly on your fork without any additional parts.