... SL,HTD:3M,5M,8M,14M,20M AND SO ONMetric System: T-type serie(T2.5,T5,T10,T20)HTD ... STS types(S2M,S3M,S4.5M,S5M,S8M,S14M)The British System:MXL,XL,L,H,XMaterial:1045 carbon steel, aluminum ... We can also produce pulleys even sizes are not in the form.The material of pulley mainly composed of carbon steel, if ... diameter is larger than 250 mm, iron is used.The pitch&tooth type of double sided timing belt is ...