This front drum brake is 36H for 12G spokes. It is used by 1999 whizzer WC1 - NE5 motorbikes and also 2014 Cruzzer motorbikes. It can be used on most of electrical and motorized bicycles.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.Dealers wanted!We offer the TO-DOOR sea freight shipping service.