10 Pcs 5/16" Masonry Concrete Drill Bit Set for Tile Brick Glass

Worry Free: 10 pieces of fine grade high durable 5/16” (8mm) drill bits to meet needs for multi holes in variety projects; with extra bits at hand, don’t worry about running out of bits in the middle of a project High-Quality Concrete Drill Bits: Made of Premium carbide YG6X alloy with anti-rust treatment; head reinforced reducing bit cracking effectively, ensuring a longer drilling life Accurate Masonry Drill Bits: The tip of the bit is precision unique cross spear design; accurately ground edges reduce bit walking; superior tile cutter can run through ceramic tile in a neat and fast manner 1/4” HEX Shank Tile Drill Bits: fits into all power tools more easily and securely; popular electric hand drill, bench drill with quick change chuck Durable & Sharp: Masonry Drill Bit Set for Glass, Ceramic, Tile, Mirror, Plant Pots, Wood, Porcelain, Brick Wall etc. Please keep bits cool use running water if possible as coolant; DON’T use on hard tile