2. No need for a hole, can automatically deburr holes as you drill.
3. Working with water cooling, can effectively extend the service life of bit, drilling speed 250--400 recommended. Widely used to cut holes in a variety of material like steel, wood, thin iron, aluminum alloy, insulation boards, PVC sheet , ect.
وصف
Combination Drill & Taps
Step Cone Drill 4-20mm Step Drilll Bit For Wood Metal Hole Drilling Spiral Groove Core Drill Bit 1Pcs
Specifications:
Type: Cone Drill Bit
Material: High speed steel
4-12mm 5steps: 4-6-8-10-12mm
4-12mm 9steps: 4-5-6-7-8-9-10-11-12mm
4-20mm 9steps: 4-6-8-10-12-14-16-18-20mm
Note
Please allow 1-3mm error due to manual measurement.
Due to the difference between different monitors, the picture may not reflect the actual color of the item.
Package Includes:
1pc Step Drill Bit
1