Made of Chrome Vanadium steel Matt finish is not easy to rust Hex key wrench size range: 1.5,2,2.5,3,4,5,6,8,10mm Torx key wrench size range: T10,T15,T20,T25,T27,T30,T40,T45,T50 Long Arm Design Increases Reach and Leverage This handy set comes with can be hung, labeled holders to make it easy to find the exact size you'll need for your job