Timing pulley of high quality and most competitive in market. Features: Teeth Type: MXL,XL,L,H,XH,XXH,XXL,SL9,SL12,SL,HTD:3M,5M,8M,14M,20M AND SO ONMetric System: T-type series(T2.5,T5,T10,T20) HTD type(3M,5M,8M,14M)STPD/STS type(S2M,S3M,S4.5M,S5M,S8M,S14M)The British System:MXL,XL,L,H,XMaterial:1045 carbon steel, aluminum alloy frequently used,brass and nylon available.Surface treatment:black oxdizing,phosphating,anodize,zinc-platingTolerance:conform to customers requirementOEM/ODM service:offered Belt and pulley of our company can be attachment or replacement of imported belt and pulley. Please supply drawing when you order. We can also draw for clients as their supplied specification, hole, key way and width. Outside diameter of pulleys and size should be as form's regulation. We can also produce pulleys even sizes are not in the form. The material of pulley mainly composed of carbon steel, if possible aluminum alloy nylon can also be employed; if external diameter is larger than 250 mm, iron is used. The pitch&tooth type of double sided timing belt is same as synchronous belt. Note: we can produce symmetrical (DA) & overlapping (DB) two kinds double sided timing belt, for particular specification, we can also make according to clients' drawing or sample