uxcell 21.5mm Reduced Shank Drill Bit HSS 6542 Black Oxide with 1/2 Inch Straight Shank

• High Speed Steel tool - 21.5mm cutting diameter. Good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance
• Reduced Shank - Expanding the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes
• Black Oxide Finish - Black oxide treatment adds lubricity. Small pockets on the surface of the tool that act to hold coolant near the cutting edge
• Wide Application - Design for drilling in low and medium tensile strength materials, such aluminum, iron, copper, brass and metal
• Please Note: To make clean and precise holes, water is required for lubrication and cooling when drilling metals. Increased use of water lubrication will extend drill bit life

Specification: Cutting Diameter: 21.5mm / 0.85" Shank Diameter: 1/2" Cutting Edge Length: 77mm / 3.03" Overall Length: 155mm / 6.1" Material : High Speed Steel 6542 (HSS 6542) Finish Type: Black Oxide, Nitriding Shank Type: Round Shank Tool Flute Type: Spiral Hardened to: 65-66 HRC Descriptions: 1. High-speed steel tool is good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance 2. Reduced shank drill expand the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes. 3. Black oxide treatment adds lubricity. Small pockets on the surface of the tool that act to hold coolant near the cutting edge. 4. Design for drilling in low and medium tensile strength materials, such aluminum, iron, copper, brass and metal. 5. Running in a counterclockwise direction (right-hand cut), spiral fluted tool evacuates chips up and out of the cut to reduce clogging. Package: 1 x Reduced Shank Drill Bit Use Note: 1. To make clean and precise holes, water is required for lubrication and cooling when drilling metals. 2. Low drill pressure and increased use of water lubrication will extend drill bit life.