Simson Basic bicycle chain The Simson Basic bicycle chain is a bicycle chain suitable for city bikes without gears and bicycles with a hub gear from SACHS or Sturmey Archer. This chain has 112 links and can be adjusted to size using a Simson chain tool. Place the chain over the sprockets and connect the ends of the chain together by clicking the supplied connecting link. Specifications: Color: black Material: steel Dimensions: 1.9 x 7.7 x 22.8 cm (L x W x H) Chain size: 1/2 x 1/8 inch Number of links: 112 Weight: 424 grams Suitable: for city bikes