1.material: steel timing pulley 2 tooth type: XL 3.tooth number:48 4.no hub, no flanges, ... grove 5.resistance black Circular pitch system synchronous pulley MXL XL L H XH XXH T T2.5 T5 T10 ... HTD 3M 5M 8M 14M 20M OEM/ODM Service offered XL steel timing belt pulleys Advantages of timing pulleys: 1.We ... supply timing pulley following series:XL,L,H,T,HTD,AT2.we can also produce pulleys ...