Gives performance of TCT Core drills but with extra length which allows user to drill to 120mm depth without having to stop and break out the core. Tungsten Carbide Teeth with Hardened Steel body. For drilling concrete, brick, light block and stone. Can be used with hammer action, giving great drilling speed and saving time and money. Specifications: Uses same arbors as diamond core drills. Use with lightweight drill (750-1000W).