The XLC TO-S25 chain tool is a silver steel tool that no workshop should be without. It can be used to push out the pin to open the chain and vice versa. It is particularly useful when fitting a new chain or performing other maintenance work. You can use the XLC TO-S25 chain tool for 6, 7, 8, 9 and 10 speed chains and it is compatible with Shimano, Connex and KMC.