Moose Racing 520 FB O-Ring Chain - 110 Links 195FB110This is the top of the linethe strongest, most durable sealed chain Moose Racing offers FB = Fine Blanking, an incredibly precise manufacturing process that yields perfectly cut links. Tight tolerances make the plate, pin, and bushing union accurate and strong Due to the accuracy of the cuts and the use of stronger alloyed steel the FB has our highest tensile strength rating, nearly 8,000 lb. Special sealing rings are chemically treated to gain