350MM Round Handle Sds Wall Drill Bit, Concrete Cement Stone Tungsten Carbide Bit With 30/40/50MM, High Strength, Stability, Fast Drilling For Air Conditioners, Washing Machines Pipe Punching

Made of hardened metal, high grade tungsten carbide tipped, durable and long service life. Suitable for brick walls, red bricks, masonry walls, foam bricks, hollow core drills, etc. It can be used to install air conditioners, such as air conditioners, hoods, or washing machines Machines Pipe Punching Etc. The teeth of the drill bit are sharp, the vibration is small during the opening process, and the operation is stable. Rounds alloy blade combinations, each blade to bear part of the workload, not prone to chipping off the edge. This set includes 30mm, 40mm, 50mm core drill bits, SDS + arbors, guide drills and a 350mm SDS + extension shank. Designed professional drain holes ensure smooth chip removal during opening. Comes complete with core drill, pilot drill, and SDS arbor, easy and fast to cut smooth clean hole. Low pressure is essential to prolong the life of the cutting tips and get a straight cut. Hole openers cannot be used for concrete, load-bearing walls, walls with steel bars.