40mm Concrete Hole Saw Round Handle SDS Plus Shank, Wall Hole Cutter Cement Stone Wall Drill For Concrete Brick Air Conditioner

The concrete hole saw is made of carbide tipped metal, stable and durable, with fast punching and long service life. High frequency welding technology, welding openings are very strong with smooth welding mouth inside and outside. Designed two large chip openings on both sides of the wall hole cutter for smoother chip removal and higher drilling performance. Wall hole opening and brick structure operation, such as adobe wall, mixed brick wall, cement wall, foam wall, red brick wall. Widely used for air conditioner installation, oil fumes evacuation and sewer line hole opening etc. Package includes: 1 x hole saw, 1 x connecting rod, 1 x central positioning bit, 1 x positioning screw. This drill bit set comes with 1 locking screw and 1 pilot drill, it is very convenient to help stabilize the drilling process, ensure the tip does not move during drilling.