Multi-grind sharp edges deliver high drilling speed even in hard materials, perform 85 % faster than standard bits, U-shape groove provide good chip removal. The hex design of shank helps the hand electric drill to clamp the drill bit and prevent slipping and wandering, fit for most hand electric drills.
High-quality multi-purpose drill bit set made of tungsten carbide that prevents bit cracking and provides longer life, sturdy and durable. Spear pointed design strong tungsten carbide tip can easily penetrate various material, U groove drill bit design, surface rust treatment, drilling and chip removal more smoothly. Masonry drill bits set is widely used, it can easily penetrate various material, like ceramic tile, glass, hard plastic, cement concrete, mirror travertine, brick wall, wood, and can reduce breakout.