2. Nitridecoated to reduce friction and run cooler
3. No need for a hole, can automatically deburr holes as you drill.
4. Special step stucture, can drill different size holes,
5. 1 step drill can be used as 1 box of drill bit.
6. Working with water cooling, can effectively extend the service life of bit,drilling speed 250--400 recommended.Widely used to cut holes ina variety of material like thin steel board, wood, thin iron, aluminum alloy,insulation boards, PVC sheet,ect.
وصف
Combination Drill & Taps
Step Drill Bit Metal Drill 4-12/20/32mm 6-30mm Cobalt Step Cone Drill Bit Wood/Metal Hole Drilling Tool 1Pcs
Specification:
Type: Spiral Step Drill Bit
Material: High Speed Steel
Coated:Nitride Coated
Handle:Triangle
Scop: Thin iron plate,aluminum,insulation panels,PVC panels 0.4mm thickness within the timber.
4-12mm: 4-6-8-10-12mm 5 steps
4-20mm: 4-6-8-10-12-14-16-18-20mm 9 steps
4-32mm: 4-6-8-10-12-14-16-18-20-22-24-26-28-30-32mm 15 steps
6-30mm:4-6-8-10-12-14-16-18-20-22-24-26-28-30mm 14 steps
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.