A quality O-ring chain at an affordable price. The SRO series chains offer a value-priced O-ring chain that will not compromise on quality or durability. Features include lightening holes*,high-tech heat-treated steel alloys and all the exact same quality and craftsmanship that EK puts into their entire product line. On road or off-road.

_{*420SRO and 428SROZ do not utilize lightening holes}