General description This Concrete Drill Bit set includes 30mm, 40mm, and 50mm core drill bits, SDS+ chucks, guide drills, and a 350mm SDS+ extension shank. Made from high-quality carbide-tipped tungsten, these drill bits are designed for durability and long service life. They are suitable for various applications, including drilling into brick walls, masonry, foam bricks, and for installing air conditioning units, extractor hoods, or washing machines. Technical specifications Core Drill Diameter: 30mm, 40mm, 50mm Connecting Rod Length: 350mm Weight: 1.5kg Material: Carbide Tipped Metal Installation The hole opener and connecting rod must be used together to penetrate the wall. After penetrating the wall, you can remove the positioning drill and reopen the hole. Usage Ideal for drilling into brick walls, red bricks, masonry walls, and foam bricks. Can be used for installing air conditioners, range hoods, washing machines, and for pipe punching. Low pressure is essential to prolong the