hgudesign 2-Piece 1/2" Reduced Shank Drill Bits, 28mm Nitride High Speed Steel HSS 6542, Ideal for Stainless Steel, Alloy, Metal, and Plastic

M2 (6542) High Speed Steel Tool - 28mm Cutting Diameter. Ideal for a variety of general-purpose tasks, featuring a combination of hardness and toughness for enhanced wear resistance 1/2 Inch Reduced Shank - Broadens the operational range of portable drill chucks. Standard flute and length for fewer adjustments when changing tools - Nitride treatment enhances tool hardness and wear resistance, prolonging sharpness and cutting performance, while also offering corrosion protection. Features designed to keep coolant at the cutting edge Broad Utility - Tailored for boring into materials with low to medium tensile strength, aluminum, iron, copper, and various metals Note: For clean and precise drilling in metals, utilize water for cooling and lubrication. Frequent water application can prolong the drill bit's service life