Step Drill Bit Set & Automatic Center Punch, 50 Sizes in 5 High Speed Steel Titanium Coated Double Sided Drill with Aluminum Case, for DIY Lovers
- ... operation cooler, improve the sharpness of the drill bit, wear and corrosion resistance, and maintain good gloss even after long-term use. The laser marking is clear, and the diameter is clear at a glance.
- ⭐【Unique Design】- Double-edged and X-shaped opening design to ensure faster and smoother cutting.
- double spiral grooves reduce cutting resistance and chip removal more smoothly.
- triangular shank design can prevent the drill from slipping, suitable for a variety of models.
- ⭐【Automatic Center Punch】- It can realize automatic and high impact force by spring loading, the knurled surface of the brass body can be non-slip. The cemented carbide drill bit makes the center punch ten times stronger than the ordinary drill bit.