1. The step drill is designed to obtain holes of different diameter without rearranging the cutting tool.
Classic high speed steel with titanium coating to reduce heating.
2. Heat treatment and polishing. Drill perfectly round holes in thin steel, brass, plastic, wood, etc. D.
3. Light drilling: Two-groove design provides faster, cleaner and smoother cutting.
4. Functions: deburring, chamfering, cutting or expanding holes.
5. Auxiliary Tools: Gun Drill, Hand Drill, Charging Drill, Desktop Drill.