Check the listing for details. 32mm HSS 6542 Reduced Shank Drill Bit with 1/2 Inch Straight Shank. Condition: New. Listed at 28.32 USD. Reduced Shank Drill Bit Product Details1.Black Oxide Finish - Black oxide treatment adds lubricity. Small pockets on the surface of the tool that act to hold coolant near the cutting edge2.Reduced Shank - Expanding the size range capacity of a portable drill chuck. Common flute and overall length for minimal adjustment during tool changes3.High Speed Steel tool - 32mm cutting diameter. Good for most general purpose applications, featuring a combination of hardness and toughness for wear resistance4.Wide Application - Design for drilling in low and medium tensile strength materials, such aluminum, iron, copper, brass and metal5.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.