... 2) pitch:12.7mm 3) plate thickness:1.5mm 4) colors: natural,blue,black,yellow Motorcycle chains 4201)material : 40mn2)color ... pitches),B series (9.525-50.8mm pitches)2)motorcycle chains :415,415H,420,420H,428,428H,520,520H, ... duplex, triplex chains DIN/ISOPitch(P)Rollerwidth betweenPin lengthInner plate depthPlate thicknessUltimate tensile strengthAverage tensile strengthFatigeChain No.diameter(d)inner ...