High Quality Material - This Reduced Shank Drill Bit is crafted from M2 high-speed steel with dual gold titanium and black nitride coatings, delivering exceptional durability, sharpness, and corrosion resistance for smoother drilling performance. Metal Drill Bit for Steel with Black & Gold Finish - This reduced shank drill bit's premium gold&black dual coating enhances lubrication for smoother drilling, offering superior durability and corrosion resistance versus standard coatings. 135° Split Point & 3-Flat 1/2" Shank - This drill bit prevents walking while cutting hard metals without pilot holes, clearing chips for precise drilling.3-flat 1/2" reduced shank metal drill bit for secure portable drilling of tough materials. Set includes - 8 pieces of 6" long reduced shank drill bits (9/16”, 5/8”, 11/16”, 3/4”, 13/16”, 7/8”, 15/16”, 1”) stored in a heavy-duty aluminum case for easy transport and organization. Versatile Application - This metal drill bit for steel expertly drills steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials., maintaining consistent performance across all materials. COMOWARE Reduced Shank Drill Bit Set, 8 Sizes from 9/16" to 1", HSS M2, Black & Gold Drill Bit with 3-Flat 1/2" Shank, 135° Split Point, Drills Bits for Metal/Plastic/Wood, with Storage case