Specification:Cutting Diameter: 22mm / 0.87"Shank Diameter: 1/2" / 12.7mm (approx.)Cutting Edge Length: 83mm / 3.27"Overall Length: 157mm / 6.18"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.
eBay