The crank brothers multi 10 tool is the the perfect tool to pack away in your bag when you are heading out to the trails whether you39re going for an all day session or just a mess around the crank brothers multi 10 tool allows you to easily and quickly change and tweak things on your bike when you are on the go and you won39t even notice its 124g self in your bag until you need it the tool has a frame made up of 6061 t6 aluminium whilst this bike multi tool is made from 6051 high