EXLECO 100 mm Concrete Hole Saw with 220 mm SDS Plus Extension and Centering Drill, Concrete Core Drill, Multi-Material Concrete Hole Saw for Masonry Stones, Cement, Brick

100mm concrete hole saw is made of carbon steel and tungsten carbide. The three-point design and 135° triangular cutting edge of the concrete drill bit make drilling easier. Combined with the core drill vent vents, debris is effectively evacuated during use. hole saw has a one-piece body and replaceable SDS concrete drills, allowing you to work without water. supplied wrench simplifies tightening and loosening of the fixing screws. Fixing screws can loosen easily; M3 replacement screws are recommended. included dust collection bag retains brick residue and dust generated by the multi-material hole saw, reducing dirt. plastic box is provided to store accessories such as SDS PLUS extension, security screws and key, preventing any loss. recommend applying light pressure to minimize friction. Regularly remove the SDS extension cord after penetration to remove heat and debris, and check the tightness of the screws. For long work, wear glasses, gloves and earplugs. hole saw box includes an SDS PLUS extension of 220 mm, compatible with lightweight drill hammers. 110mm center drill bit is suitable for cooker hood ducts, air conditioning ducts etc. 100mm concrete hole saw drills red brick, cinder block, hollow brick, terracotta and aerated concrete walls up to 30cm thick.