Step Drill, also known as step drill or pagoda drill (English Step Drill), mainly used for drilling within 3mm of steel plate, a drill bit can replace the use of multi-bit, according to the need to process different diameter holes, and can achieve large Hole one-time processing is completed, do not need to replace the drill bit and play positioning holes.

Changzhou Good Tools Tools Co., Ltd. is a hi-tech enterprise integrating research, development and production. The main products are ladder drill, inner cold drill, non-standard tool, cutter, reamer, drill bit, , Positioning mandrel, Arbor, composite cutting tools.