1.T type timing belt for power transmission 2.International standard ... pulleys goods with various specifications.Here is the available type for your reference:MXL,XL,L,H,XH,T5 ... ,cast iron,aluminum alloy,zinc alloy,plastic,nylon,etcT type timing belt pulley for power transmission.Material for synchronous ... shapes of the pulleys can be made to order.Any question or need,pls feel free to contact me T type ...