Material: high-speed steel 4241 (suitable for use in general hardness workpieces, such as aluminum, Wood Board,plastic,sheet metal that thickness below 5MM
Deburring, chamfering, and opening oval holes
Step structure, a drill can open a variety of sizes aperture
Ideal for using to cut holes in a variety of materials including aluminum, Wood Board, plastic,sheet metal, PVC board, insulation board
4-32mm set, No need to use the center punch, you can also drill beautiful apertures