Steel; Convenient crank puller--the crank extractor is used to remove square type crank arms, repairing crank puller; Portable bike wrench--wear-resistant and durable, and it will not damage, convenient shaft remover; Wear-resistant bike tools--the wrench grip is supple, non-slip and prevents scratches on the palm, facilitates force, steel crank puller; Multi-function crank puller--suitable for any 20 teeth splined type bottom bracket, generally the type used for any bike with chainset, bike accessories; Wear-resistant bike wrench--this tool has removable head ensures that it will fit any type, and it is easy to install and use, multi-function bike tools

What's in the box
1 x Service Kits