1) Model: 25H,CL04 2*3, 3*4, 4*5,06BT,05T 2) Standards: ISO /DIN /ANSI 3)Pin and Bush with polishing treatment Model: 25H Bush Timing ChainCL04 2*3, 3*4, 4*5 Tooth Timing Chain06BT,05TWe can supply set timing sprocketsStandards: ISO /DIN /ANSI Pin and Bush with polishing treatmentPin with accurate grinding Timing Chain automotive engine chain 25 25H 06B