An excellent value basic do-it-all chain tool for cyclists who want to be prepared while on the road. It's a reliable and durable tool compatible with single and multi-speed chains up to 12 speed. The tool is universal so it will fit all makes and models and includes chain hook and chain pin breaker. Note: Not compatible with Campagnolo hollow pin chains. It features 6 functions including a secondary chain link fence, chain pin breaker, mini hammer, chain pin compartment, and a stainless steel wire chain hook. Size: 8.3 x 4.3 x 1.5 cm / 3.3” x 1.7” x 0.6”. Weight: 82g / 2.89oz. Chain tool material: CrMo Steel. Tool material: Hardened Steel. Colour: Silver.