This rear wheel sheave is for installing the rear transmission A and AX type V-belt to the spoke rear wheel (24" and 26" rim with 36 spokes) from clutch. Spoke size can be 10 or 12 gauge. This sheave kit is including a sheave, 9 spoke clamps and 18 bolts. Please check the pictures for all the detailed dimensions.We are offering complete parts and kits for a home-built Cruzzer Motorbikes. The assembling processes are shown by videos on our website cruzzermotorbikes.com.For more detailed information, please check our blog "wc1manufacturer.wordpress.com" by Google search.NOTICE: We, the seller of listed item or items, are NOT Whizzer USA. We DO NOT represent Whizzer USA. We are NOT affiliated with Whizzer USA or the Trademark Whizzer, Whizzer USA, Whizzer motorbike. We manufacture and sell aftermarket parts that will fit on certain Whizzer motorbikes and non-Whizzer scooters. We do not manufacture, offer or sell Whizzer brand parts. Any use of the term Whizzer or Whizzer models in the listing are solely for item description purpose only.