Concrete drill bit 82mm with SDS bit and 220mm MAX adapter, carbide hollow hole cutter for brick, concrete, cement stone walls, etc.

Bit 82mm (3-15/64″) Colour: silver With SDS pilot bit and 220mm MAX adapter (shank diameter 17.8MM), 1 bolt spanner, made of high quality 45# steel and carbide tungsten carbide blade, heat treated and hardened for robustness. The core drill bit is designed with two large chip evacuation ports on both sides for smoother chip evacuation and higher drilling performance. Carbide hollow hole bits: easy to handle, easy to use and fast to pierce, ideal for cutting clean holes in concrete, brick walls, red brick, masonry walls, foam blocks and block work. It can be used to install air conditioners, extractor hoods or washing machines. Note: Do not use steel, tiles or stone. Concrete drill applications: Widely used to install air conditioners, exhaust pipes and sewer openings etc. Cautions. 1. The opener and connecting rod must be used together to penetrate the wall. 2. After closing the impact drill mode and drilling into the wall, the positioning drill can be removed and the hole reopened. 3. The hole opener cannot be used on load-bearing walls or walls with reinforcement. 4. This hole opener bit cannot be used with impact drills and hand drills with 3-jaw chuck. 5. To support the drilling performance, chips can be removed by moving the drill bit back and forth. The hole opener and the connecting rod must be used together in order to penetrate walls. During use, the forces should be even and the machine should be stable to prevent danger. It is recommended to wear goggles and gloves when working. What else can LAIWEI do for you? 7×24 customer service.