For the smoothest and quietest ride, choose this chain. Made for Japan's elite Keirin riders, this chain bears a NJS stamp, make this a top choice for riders around the world. Premium grade metals go into making this fixed gear chain. Full bushings support the rollers, while the Cro-Mo steel outer links are stretch resistant. Gold plates with black inner links. 1/2x1/8 with 106 links with a screw on connecting pin.