CoCud Twist Drill Bits, 5.3mm Cutting Diameter 0.21″ Shank, High-Speed Steel Black Oxide Coating Jobber Bit Set (Applications: for Metal Wood Plastic), 2-Pieces
Drill Bit set Size — 2Pcs 5.3mm / 0.21-inch dia metric twist drill bit with 50mm / 1.97-inch blade length, and total length is 85mm / 3.35-inch.
Wide Applications — Carpenters and decoration workers commonly use the straight-handle twist drill bit to drill holes. They are also widely used in machine workshops and maintenance departments to drill metals, plastics, stainless steel, iron, titanium alloys, and wood.
Efficient — The sharp cutting edge achieves smooth and burr-free cutting, and the spiral chip removal design makes chip removal smoother and more efficient.
High-Speed Steel — The twist drill bit set is made of high-speed steel. After quenching treatment, it is hard and wear-resistant, more resistant to high temperatures, and not easy to break. The surface is black oxidized and not easy to rust.
Useful Tips — Compatible models of twist drill bits include electric hand drills and bench drills. During installation, the drill shank needs to be clamped to prevent shaking and slipping.