Looking for a reliable and efficient spade drill bit for your woodworking projects Look no further than the Starrett Flat Wood Drill Bit. Featuring twin spurs for clean entry and exit of holes, a precision ground face, and a 6.35mm hexagonal shank suitable for impact drills, this wood drill bits enables accurate and fast starts in materials with a reduction in breakout around the hole. Additionally, its cutting head design minimizes heat build-up during use, and it undergoes a specialized heat treatment process to increase its tool life. This versatile tool is suitable for both professional and DIY woodworking projects.andnbsp;SPECIFICATIONS:Diameter: 20mmTotal length: 152mmWorking length: 105mmShank type: HexagonalShank size: 6.35mm (1/4")Number of spurs: 2Cutting head design: Reduces heat build-upTip type: Precision groundSuitable for: Woodworking projectsMaterial: High-speed steel (HSS)Specialized heat treatment: Increases tool lifeCompatibility: Impact drills.