Welded carbide alloy head. H-groove for drilling into the material chip and for faster and more convenient extraction of the drill. Long lasting durability, suitable for drilling in various materials, such as: new and old cement, bricks, red bricks, plasterboard, granite, marble, etc. They need to be installed on the hammer to use it, hammer it by repeatedly hammering the finish of the drilling. Drill hole powder by discharging rotary chisel, hammer drill usually brittle objects larger jobs, such as various types of brick, concrete, supporting walls, stone type and drilling processes., Manufacturer: TF