Hex Key Wrench for Bi-Metal Hole Saw Material:High Carbon Steel Size:1/4" Good Qulity, Long Life Package:paper box Hex Key Wrench for Bi-Metal Hole SawMaterial:High Carbon SteelSize:1/4"Package:paper boxGood Qulity Hex Key Wrench for Bi-metal Hole Saws. We also provide all kinds of Bi-metal hole saw sets! If you need anything, please contact us freely!