Product code: TT1303 An excellent value in a basic do-it-all chain tool. Compatible with single and multi-speed chains up to 12 speed. Includes chain hook and chain pin breaker.Functions: 6 Chain Tool: CrMo steel Chain Hook: Stainless steel wire Tool Material: Hardened steel Added Features: Secondary chain link fence, Chain pin breakerMini hammer, Chain pin compartment ((Chain pins not included)Size 8.3 x 4.3 x 1.5 cm / 3.3” x 1.7” x 0.6” Weight: 82g