Multi Material Drill Bit Set, 5PCS Masonry Drill and Twist Drill Bits for Tile, Ceramics, Glass, Plastic, Wood and Cinder Block, Tungsten Carbide Tipped with Tri-Shank, 1/4", 5/16", 3/8", 1/2"
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Special Features
Multiple Sizes: 2x 6mm(1/4"), 1x 8mm(5/16"), 1x 10mm(3/8"), 1x 12mm(1/2"). Set comes with durable plastic case for safekeeping.
Fast and Efficient Drilling: Spear pointed design strong tungsten carbide tip can easily penetrate various material and reduces breakout.
Cut Perfect Circles Holes: Suitable for glass, tile, wood, ceramic, etc. When drilling hard material (glass, porcelain floor tile), please use water for lubrication.
Safe and Convenient: U-shape groove allow for effective scraps and heat discharge. Tri-flat on the shanks of drills are constructed for tighter chucking maximizing security for precise holes.