QWORK® Four-Flute Drill Bit Set, 7PCS Tungsten Carbide, Masonry Bits, 3/4/5/6/8/10/12MM, 1/4" Hex Shank,Silver

Material: Made of solid tungsten carbide, high strength and long lifespan. Threaded chip removal groove design expands the chip removal and cooling space Multi-functional Kit: Includes 7 drill bits in sizes from 3mm, 4mm, 5mm, 6mm, 8mm, 10mm, and 12mm, suitable for a wide range of applications. Design: Features a four-flute serrated edge and an eccentric positioning tip for precise positioning and fast drilling. Wide Compatibility: Suitable for general-purpose electric drills, bench drills, and hand drills. Works on various materials including tile/ceramic/glass/concrete/metal, etc. Caution: Apply pressure gradually, slowly transitioning from an angled to a vertical drilling position. Use water for cooling during use.