5PCS Metal Drill Bit Set Multi-functional Punching Hole Triangle Shank Drill Bits for Tile/Concrete/Brick/Glass/Plastics/Wood

Features:
Adopts fine quality materials, has low resistance and high hardness, improving work efficiency.
Triangular shank design makes the clamping more tight and does not slip.
Smooth and flat spiral grooves makes the drilling smoother.
Has strong toughness and wear resistance, can be installed on the electric drill.
Provides smooth and accurate drilling on ceramic tile, glass, brick wall, wood, etc.
Comes with a storage box, convenient to store and carry.