Carbide Steel Wall Hole Saw， Ankoow Dia 40mm SDS Plus Shank Drill Bit Cutter for Brick Concrete Cement Stone Connecting Rod with Wrench DIY Drilling Tools</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>❣. Material: Made of Cr40+YG11C alloy.</li><li>❣. High-frequency welding technology， welding openings is very strong， smooth inside and outside welding mouth， precision engage， appearance.</li><li>❣. Using the Electric Hammer of the impact + rotation function on the Wall， Hollow Brick to operate Air Conditioning Holes， Pipe Holes and so on.</li><li>❣. Rounds carbide blade combinations， each blade to bear part of the workload， not prone to chipping off the edge.</li><li>❣. Mainly work on the Opening Hole Operation of Wall and Brick structure， such as Red brick and Cement. Widely used for installing the Air Conditioner， Oil Fume Exhauster and Sewer Pipeline Hole Open ect.</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/41KpFOQ5OML.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51cinUCBCjL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41INL7GNVkL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41WL2SQPF8L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41-x6csZe9L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/4153SWBUapL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/51RmLvmYwUL.jpg' noproxy></br>