uxcell 2pcs Reduced Shank Drill Bits 20mm Black Nitride Coated High Speed Steel HSS 9341 with 1/2 Inch Straight Shank, Twist Drill Bit for Stainless Steel Alloy Metal Plastic

Specification:Cutting Diameter: 20mm / 0.79"Shank Diameter: 1/2" (approx.)Cutting Edge Length: 81mm / 3.19"Overall Length: 150mm / 5.91"Material : High Speed Steel 9341 (HSS 9341)Finish Type: Black Nitride CoatedShank Type: Round ShankTool Flute Type: SpiralHardened to: 62-65 HRCDescriptions:1. High-speed steel tool is good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance2. 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. The black nitride coating increases hardness and wear resistance, allowing it to maintain its sharpness and cutting efficiency longer, and also provides corrosion resistance. 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:2pcs x Reduced Shank Drill BitsUse 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.

• High Speed Steel tool - 20mm cutting diameter. Good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance
• 1/2 Inch Reduced Shank - Expanding the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes
• Black Finish - Black nitride coating increases hardness and wear resistance, allowing it to maintain its sharpness and cutting efficiency longer, and also provides corrosion resistance. 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