1 Set 3-12Mm 4-12Mm 4-20Mm 4-32Mm Metric Step Drill Bit Step Cone Cutter Tools Metal Drill Bit Set for Woodworking Wood

4 specifications: with a five-step drill with 4 to 12mm a nine-step drill with 4 to 20mm and a ten-step drill with 3 to 12mm and a fifteen-step drill with 4 to 32mm. Powerful durability: Avoid the inconvenience of the three flat handles to ensure a firm grip. Easy drilling: The two-edged design provides faster and smoother cutting. With little pressure applied the kit can cut wood sheet metal steel and other surfaces. Automatic center punch: When pressed on the surface it will produce automatic high impact force spring-loaded impact force and adjustable cap can adjust the impact force. Versatile: Mark the location of holes and activate drills and screws to prevent drifting. Heat-treated alloy steel punches have sharp precision tips and a corrosion-resistant brass body with a non-slip knurled handle. note: Before you start drilling and tightening you can mark the location of the hole with an automatic center punch. When pressed against wood metal and plastic surfaces it produces automatic high-impact spring impacts. Adjustable cover adjusts striking force. It has a heat-treated punch a sharp precision tip and a corrosion-resistant body with a non-slip knurled handle. The cutter size is as follows: 5-step drill: 4-12mm (4mm 6mm 8mm 10mm 12mm) 9-step drill: 4-20mm (4mm 6mm 8mm 10mm 12mm 14mm 16mm 18mm 20mm) 10-step drill: 3-12mm (3mm 4mm 5mm 6mm 7mm 8mm 9mm 10mm 11mm 12mm) 15-step drill: 4-32mm (4 6 8 10 12 14 16 18 20 22 24 26 28 30 32mm) Color: Gold Material: Steel Package Contents: 4 * Metric Step Drill Bit 1 * Auto Center Punch Only the above package content other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.