CoCud Reduced Shank Drill Bit, 17.5mm Cutting Edge 1/2" Shank, Nitride Coated High Speed Steel 6542 Twist Drill Bits - (Applications: for Stainless Steel Metal Wood)

• ★ Drill Bit Size --- Cutting edge diameter: 17.5mm / 0.69"; shank diameter: 1/2"; cutting edge length: 82mm / 3.23"; overall length: 155mm / 6.1"; hardness: HRC65-66; cutting direction: right hand.
• ★ Wide Applications --- Widely used for drilling stainless steel, aluminum alloy, cast iron, high carbon steel, copper, hard wood, hard plastic. Use on drill presses and bench drills. Reduced shank drill bits expand the size range capacity of portable drill chucks.
• ★ Spiral Flutes --- Sharp spiral flutes provide fast, neat and smooth cuts. The spiral groove facilitates the export of metal chips, which saves time and effort in operation. Designed with small pockets to keep coolant near the cutting edge.
• ★ 6542 High Speed Steel --- The twist drill bit is high hardness, good toughness, high strength. Black nitride coating has excellent wear resistance, corrosion resistance and high temperature resistance. Provides better lubricant application, smoother drilling.
• ★ Useful Tips --- The appropriate lubricant is beneficial for cutting or cooling, improving dimensional accuracy and extending tool life. Reduce forward and reverse speed. Use harder aluminum and wood.

Attributes: * Cutting Edge Diameter: 17.5mm / 0.69" * Shank Diameter: 1/2" * Cutting Edge Length: 82mm / 3.23" * Overall Length: 155mm / 6.1" * Material: High Speed Steel (HSS) 6542 * Finish: Nitride Coated * Hardness: HRC65-66 * Shank Type: Straight, Round * Tool Flute Type: Spiral * Cutting Direction: Right Hand What Is Included: * 1 Piece x Reduced Shank Drill Bit Applications & Features: --- Widely used for drilling stainless steel, aluminum alloy, cast iron, high carbon steel, copper, hard wood, hard plastic, and other metal materials in maintenance departments, machine shops, and other industries. Reduced shank drill bits expand the size range capacity of portable drill chucks. Use on drill presses and bench drills. The appropriate lubricant is beneficial for cutting or cooling, improving dimensional accuracy and extending tool life. --- The twist drill bit is made of 6542 high-speed steel, with high hardness, good toughness, high strength. The black nitride coating has excellent wear resistance, corrosion resistance and high temperature resistance. Provides better lubricant application, smoother drilling, and is more durable and corrosion resistant than regular silver tone surfaces. Sharp spiral flutes provide fast, neat and smooth cuts. The spiral groove facilitates the export of metal chips, which saves time and effort in operation. Designed with small pockets to keep coolant near the cutting edge. Useful Tips: --- Drilling edges with burrs: Reduce the number of holes drilled and check various cutting conditions to ensure proper tool handling. Reduce forward and reverse speed. Use harder aluminum and wood. Drill metal with high hardness, the rotational speed should be slower than normal drilling.