This item is practically new, having only been used once after purchase, but I gave up on cutting the chain because the width didn't match. The chain hook is unused. Please note that this tool is not compatible with reinforced thick-tooth chains for electric assist bikes such as the Panasonic NGC013. ● Hardened steel / Cr-Mo tool ● Hex wrenches: 4, 5mm ● Chain tool: Single-speed to 13-speed, compatible with Campagnolo 13-speed chains ● Chain hook ● Chain pin break hole ● Plastic pin holder ● L79 x W42 x H21mm ● 66g Official product URL https://topeak.jp/products/super-chain-tool-13s/