EASY TO USE: Chain joints for the magic buckle, easy to remove or install the bike link. Just like everything up properly and push the pin out and remove the link, then put the chain back together, line it all up, and turn the sprocket to confirm the chain is firmly attached. (Note: Does not include disassembly tools) HIGH STRENGTH Special forging steel,tensile strength over 820 kgf to ensure the high strength;Suitable for 6/7/8 speed bicycle chain, 1/2"x3/32". SMOOTH SHIFTING...