RTH05 5pcs/box Adjustable Depth Countersink Drill Bit Smooth Drilling Durable Alloy Step Drill Reliable Results Efficient Drilling Alloy Drill Bit Concealed Screw Installation

Material: Steel Color: Blue, Gold, Red Selling method:5 pcs/box Four-edge Counterbore DrillName: Four-edge Counterbore Drill Size: 1444 cm Description:

1. Made of high-quality alloy material with high hardness and wear resistance, ensuring stable drilling performance and long service life.
2. Designed with two sharp flutes for fast and smooth cutting, effectively reducing chattering and producing clean, tidy holes.
3. Features adjustable depth design to flexibly control drilling depth, meeting different construction requirements for countersinking and hidden screw installation.
4. Professional step and tapered hole structure allows screws to be perfectly concealed, making surface processing more neat and beautiful.
5. Widely compatible with various drilling tools, suitable for multiple materials processing in daily maintenance, woodworking and DIY projects.