Timing pully British Types: MXL,XL,L,H,XH,L,H,XH, XXH HTD Types:3M,5M,8M,14M Types:T2. ... types: SB,TB,QD Timing pullyBritish Types: MXL,XL,L,H,XH,L,H,XH,XXHHTD Types:3M,5M,8M,14MTypes:T2.5 ... ,T20Bore types: SB,TB,QDFeatures:1. Teeth Type: MXL,XL,L,H,XH,XXH,XXL,SL9,SL12,SL,HTD:3M,5M,8M ... ,S4.5M,S5M,S8M,S14M)5. The British System:MXL,XL,L,H,X6. Material:1045 carbon steel, aluminum alloy frequently used ...