10PCS Multi-functional Cemented Carbide Drill Bits Kit 8mm Triangular Cutter Heads Double Spiral Grooved Drilling Bits Set for Ceramic Tile/Ground/Wood/Glass

Features:
Cemented carbide cutter heads, accurately drill without effort.
Surface coating process makes the surface smooth, free of burrs.
Triangular cutting edges technology, improves drilling efficiency.
Double thread chip chute, provides smoother chip removal.
Triangular handle, effectively prevents skidding in use.
Apply to ceramic tile, ground, wood, concrete, glass, red brick, ect.