2X Concrete Hole Saw Kits SDS Plus Wall Hole Cutter Cement Drill Bit Sets(30, 40, 60mm), with 220mm Connecting Rod

Long SDS plus : Come with a SDS puls for this cement drill bits, male thread adapter design, match your drill chuck fastening and much more improve speedier drilling Widely application: This cement brick electric hammer drill bit widely used for cutting clean holes in concrete, brick and block work, drilling walls, , installation of air-conditioning, etc. Material: The concrete hole saw kit, high-frequency welding technology, welding openings is very strong, smooth inside and outside welding mouth. Ultra-sturdiness and , easy to opearation, and long service life.