uxcell Reduced Shank Drill Bit 21mm High Speed Steel HSS 4241 with 12 Inch Straight Shank

Specification: Cutting Diameter: 21mm / 0.83" Shank Diameter: 1/2" Cutting Edge Length: 82mm / 3.23" Effective Cutting Edge Length: 66mm / 2.6“ Overall Length: 150mm / 6.0" Material : High Speed Steel 4241 (HSS 4241) Finish Type: Polished Shank Type: Round Shank Tool Flute Type: Spiral Hardened to: 62-63 HRC Color: Silver Tone 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. Polished 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.