Our updated Road Mountain Cycling Hub parts are made of Steel 1045, durable and practical for most bikes. Please see images, and you will find the different from others, the cap is thicker.
The Rear hollow shaft size: approx. 145mm / 5.7", hole diameter: approx. 9.2mm / 0.36"
The front hollow shaft size: approx. 105mm / 4.1", hole diameter: approx. 9.2mm / 0.36"
The durable and extra hard dustproof cap, the thickness: 65 degrees, 2.4mm / 0.09inch. Usually the axels fit 20" 22" 24" 26" 28" bike, work on a 6 7 8 speed road bike.
The bike hub weight: approx. 200g / 7.05oz, color: black