Features: Multi-specification portable mountain bike chain check and repair tool kit. High hardness alloy steel material, deformless, anti-rust and scratch. Standard chain checker to measure the chain\'s degree of wear. Manual operation, chain breaker splitter is easy to break the damaged chain. The bike link plier can simple to remove and replace the new chain, labor and time saving. The bike link plier have harden alloy steel handle which with anti-slip rubber cover. The safety catch design can protect the plier over opened. High toughness reture spring, energy saving and easy operation. The end of handle have position fixing clasp for portable size and easy storage. Equipped with chain buckle, compatible with multi-speed chain