Concrete Drill Bit Set 30mm 40mm 50mm SDS Drill Bit and Adapter 350mm Carbide Hollow Drill Bit for Bricks, Concrete, Cinder Block Walls (6pcs)

Concrete Drill Bit Set with 3 Different Hole Saw Sizes 30mm Hole Saw, 40mm Hole Saw, 50mm Hole Saw, 1x SDS Pilot Drill, 1x 350mm Adapter, 1x Bolt Wrench, made of 45# steel and tungsten carbide tips, treated and tempered to withstand the Heat for extra robustness. Carbide tip combined with optimized design with two large chip discharge openings on both sides of the crown drill bit for more even chip evacuation and greater drilling power. Tungsten Carbide Hollow Hole Cutter: easy to use, easy to use, quick punching, ideal for cutting clean holes in concrete, brick walls, red bricks, masonry walls, foam bricks and blocks. Can be used to install air conditioners, extractor hoods or washing machines. Note: Do not use steel, tile or stone. Coring Applications: Widely used for the installation of air conditioners, oil pipes and sewers, etc. Note: The opener and connecting rod must be used together to cross the wall. Apply uniform pressure during use and keep the machine stable to prevent dangers. It is recommended to wear protective glasses and gloves when working.