Features:
1.100% brand new and good quality.
2.HSS-CO M35 Spiral Grooved Step Drill Bit Cutting Tool Set
3. COBALT plating to reduce friction and keep you cooler
4. Drill holes automatically
5. Widely used for cutting holes of various materials such as stainless steel hammered steel, wood, and thin iron.
Aluminum Alloy, Insulator, PVC Sheet, Electric Shock Therapy
6. Color: As a video show
7. Material: High speed steel M35 (Suitable for use with hardness below 35 degrees)
Work pieces like carbon steel, aluminum components, etc.)
8. Surface treatment: cobalt plating
9. Scoop: thin iron plate, aluminum, insulation panel, PVC panel in lumber 5mm thick.
10. Type: 9 steps (about 3mm / 0.12in, 4mm / 0.16in, 5mm / 0.20in, 6mm / 0.24in, 7mm / 0.28in, 8mm / 0.31in, 9mm / 0.35in, 10mm / 0.39in, 12mm / 0.47in)
11. Handle: 1/4" hex shank