... roller chains 1.Factory price 2.06B,08B,10B,12B,16B,20B,24B,28B 3.OEM welcome 4 ... .ISO9001:2008 Detailed Production Description(16B-2) durable duplex roller ... and their heavy series products(19.05-44.45mm pitches)2)motorcycle chains :428,428H,530,530H,630,630H3)short ... conveyor roller chain attachments:A-1,A-2.K-1,K-2,SA-1,SA-2,SK-A,SK-24)double pitch ...