350mm Round Shank Concrete Drill Bit SDS Plus Concrete Saw Hole Cutter Cement Stone Wall Drill Bit with 30/40/50mm Expansion（Silver）

General description This 350mm Round Shank Concrete Drill Bit set includes 30mm, 40mm, and 50mm core drill bits, SDS+ chucks, guide drills, and a 350mm SDS+ extension shank. Made of hardened metal with a high-quality tungsten carbide tip, this drill bit set is designed for durability and long service life. It is suitable for various applications including drilling into brick walls, masonry walls, foam bricks, and for installing air conditioners, extractor hoods, or washing machines. Technical specifications Product Name: SDS Plus Round Handle Concrete Wall Drill Bit Color: Silver Core Drill Diameter: 30mm, 40mm, 50mm Weight: 1.5kg Material: Carbide Tipped Metal Connecting Rod Length: Approx. 350mm Usage Ideal for drilling into brick walls, red bricks, masonry walls, foam bricks, and hollow core drills. Can be used for installing air conditioners, range hoods, washing machines, and pipe punching. Low pressure is essential to extend the life of the cutting tips and achieve a straight cut. Other information Features high-frequency welding technology for strong and smooth welding openings. Professionally designed drain holes ensure smooth chip removal during operation. Note: When drilling large concrete walls, it is necessary to add water and cool continuously during drilling to ensure the wear resistance of the drill bit. Precautions: The hole opener and connecting rod must be used together to penetrate the wall. After penetrating, the positioning drill bit can be removed to reopen the hole. This set cannot be used for impact drills and hand drills for three-jaw chucks.