⭐ LAIWEI concrete drill bit 30mm(1-3/16"). with SDS pilot bit and 110 mm adapter, 1 bolt spanner, made of high quality 45# steel with carbide tungsten tip, heat treated and hardened for robustness.
⭐ Tungsten carbide tip combined with an optimised design with two large chip evacuation ports on both sides of the coring bit for smoother chip evacuation and higher drilling performance
⭐ Carbide Hollow Hole Cutter: simple to operate, easy to use, fast piercing, ideal for cutting clean holes in concrete, brick walls, red bricks, masonry walls, foam bricks, block work. It can be used to install air conditioners, extractor hoods or washing machines. Note: Do not use steel, tiles and stones.
⭐ Core drilling applications: widely used for installing air conditioners, oil drains and sewer pipe openings etc.
⭐Note: The hole opener and the connecting rod must be used together to penetrate the wall. During use, the force should be even and the machine should be stable to prevent danger. It is recommended to wear goggles and gloves when working.