About this item Complete Set - This 10-pack includes sizes 3/16" (5mm), 1/4" (6mm)*4, 5/16" (8mm)*2, 3/8" (10mm), 1/2"(12mm) and ph2 bits*2. Applicable material - Serrated masonry drill bits set for wood, plastic (like PVC pipe), foam blocks/cinder blocks, tile, red brick, and regular concrete(avoid rebar) etc. Intermittent water cooling is recommended during high-temperature operation to effectively extend the life of the drill bit. PH2 bit:This is the screwdriver bit that is mounted on top of the hand drill to screw in Phillips screws. One kit for most of your drilling needs. Tungsten Carbide Serrated Edge Technology - Features Grade YG6X tungsten carbide tips and a laser-cut serrated design for 40% faster drilling speed.Dual U-shaped spiral flutes clear debris instantly, reducing heat buildup and bit jamming. Vibration-Free Precision - 4-cutter balanced tip design reduces wobble by 30%, enabling clean holes in brittle materials like ceramic and marble. Universal 1/4" hex shank is compatible with most popular electric drills, power drills, and bench drills. Wide Application - Serrated masonry drill bits set assists for accurate drilling and positioning; Screwdriver bit allows easy locked the screws and removal screws. Perfect for DIY projects, home renovations, construction work, or professional contracting jobs involving masonry surfaces. Overview Material: Tungsten Carbide Shank Type: Hex Brand: EXFEIN Tool Flute Type: Spiral Surface Recommendation: Concrete, Masonry, Plastic, Wood
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