Jakmister 5 Pcs Masonry Wall Drill Bit Set with Round Shank & Industrial Strength Carbide Tip for Tile, Brick, Cement, Concrete, Plastic & Wood (4mm-10mm) Compatible with Bosch, Black+Decker, Ibell Drill

This set includes five masonry drill bits in various sizes for drilling into materials like masonry and concrete.

• The description claims the drill bits reduce bit stress and improve precision.
• The description claims the bits are made with hardened metal alloy for better wear resistance.
• The description claims the bits are suitable for a variety of surfaces including masonry, concrete, and wood.