About Wippermann Chain Tool: The Wippermann chain tool is right up there with Park Tools in quality, every bit so. It packs shop-quality construction, has high durability, and is precision crafted to neatly fit into a compact, pocket-friendly format when folded up. The URLE is the chain tool of choice for many bicycle techies who demand a high quality chain tool in their pack when riding. FeaturesThis chain tool is compatible with all standard bicycle-chains, from single speed thru ten-speed, Shimano, SRAM and the likeFolding, compact, sleek designOnly 3cm x 4cm!. no sharp edges or corners to gouge you or your bagIt is a shop quality tool with hardened pins for durablenessInternal compartment stores a Connex link in the need for repairs on the road.