Lezyne Dual Insert Kit Designed to fit securely inside your mountain bike's handlebars Includes essential steel bicycle tools housed in a machined aluminum frame so you can keep riding. Steel nozzles available in small medium and large sets of tool inserts. Steel nozzles are designed with anti-corrosion technology , providing increased service life and the tubeless insert kit includes five tubeless plugs and a reamer. The tool set includes hex and torx sockets in the most common sizes as well as a Phillips screwdriver for on-the-fly repairs. Never let a standard repair turn into a terrible shame again.