Product Introduction：Meet Your Demands - Great drill bits set for metal/wood/plastic countersink. Suitable for Home DIY, and General Building/Engineering Use.
High-quality Materials - Made of high-quality steel, all of which are made of high-quality carbon steel after heat treatment. It has a variety of properties such as durability, rust resistance, and new scientific spiral chip removal space design to speed up chip removal and improve work. Efficiency saves time and effort.
Multifunctional Carbide Drill Bit - Fast and efficient drilling through Stainless steel, iron, metal， tiles, glass, cinder blocks, hard plastic, cement, concrete, mirrors, windows, travertine, bricks, wood and more!
Easy to carry and store - The masonry drill set is with exquisite plastic storage packaging, beautiful and exquisite, convenient for storage and carrying
Quick Change - The hex shank fits into all power tools more easily and securely, specially for locking into quick change chuck.