motorcycle chains 420 1) material:40MN 2) pitch:12.7mm 3) plate thickness:1.5mm 4) ... .5mm pitches),B series (9.525-50.8mm pitches)2)motorcycle chains :415,415H,420,420H,428,428H,520, ... chain attachments:A-1,A-2.K-1,K-2,K-3,SA-1,SA-2,SK-A,SK-24)double ... with H series5)agricultural chains:C212A series,ZGS38 combine chain series,3558T, rice harvester chains attachments6)simplex, duplex, triplex chains DIN ...