1)PU reinforced with steel wire Rubber reinforced with glass fiber 2)T2.5,T5,T10,5M,8M,AT5, ... :if you have interest in our prodcts, you can contact with us as follow:CONTACT PERSON:Doris ChingTEL:+86-531-83279696FAX ... . If the parameter is changed, please tell me directly. Timing belt-5M-PU reinforced with steel wire