CoCud Twist Drill Bits, 7.4mm Drilling Diameter, Titanium Coated High Speed Steel 6542 Straight Round Shank - (Applications: for Stainless Steel Alloy Metal), 1-Piece - cuf220929dd0615

• ★ Twist Drill Bit Size --- Drilling diameter: 7.4mm / 0.291". tool flute length: 60mm / 2.36". shank diameter: 7.4mm / 0.291". overall length: 109mm / 4.29". tool flute type: spiral. hardness: HRC63-66. processing technology: fully ground & rolling ★ Wide Applications --- Suitable for drilling stainless steel, aluminum alloy, iron, copper, brass, hard wood, hard plastic, and other metal materials in maintenance departments, machine shops, and other industries. Use on drill presses and bench drills. ★ Titanium Coating --- Titanium coating has excellent corrosion resistance, greatly improves hardness, wear resistance, and reduces the coefficient of friction. The spiral grooves facilitate the export of metal chips, which saves time and effort in operation. ★ High Speed Steel --- The straight shank drill is made of high-speed steel 6542, with high hardness, good toughness, high strength, and wear resistance. Sharp spiral flutes provide fast, neat and smooth cuts. ★ Useful Tips --- Selecting the correct lubricant can facilitate cutting or cooling. Keep cool and gentle when using. When using a hand drill, the recommended working speed is 100-1000r/min. Proper use can greatly extend the working life of twist drill bits.