Check the listing for details. 2pcs Forstner Drill Bit 1-39/64"(41mm) Multi-tooth Woodworking Drilling Tool. Condition: New. Listed at 26.75 USD. Drilling Diameter: 41mm / 1-39/64"Shank Diameter: 10mm / 0.39"Total length: 93mm / 3.66"Material: 45# High Speed SteelSurface Treatment: PolishedHandle Type: Round ShankProduct Style: Multi-tooth Flat-wing Drill BitPackage Includes: 2pcs x Forstner Drill BitThis Forstner drill bit is made of selected 45# high-speed steel, which has high hardness and excellent wear resistance and can maintain a good hole-opening effect after repeated use. In addition, when the high-speed steel woodworking drilling tool rotates at high speed, it can withstand high temperatures and is not easy to deform, ensuring the accuracy and stability of the hole-opening.Our woodworking multi-tooth flat-wing drill bits adopt the design of alternating left and right beveled edges, which are efficient and durable, fine drilling.