Item Type: Hammer Rock Drill Bit Material: Alloy Type: Round Shank Product Use: Drilling Applicable Situation: Concrete, Masonry, Stone, Bricks and Other Construction Projects. Package List 4 x Hammer Rock Drill Bit 1This hammer rock drill bit is made from quality alloy material, which is sturdy and durable for long service life. 2The hammer rock drill bit has double spiral flutes, which keeps fast easy chips removal with fast cut speeds. 3Carbide tip ensure quick easy drilling with long cutting life, which is more efficient and timesaving. 4The drill bit is ideal for drilling in concrete, masonry, stone, bricks and other construction projects. 5This hammer rock drill bit is ideal and perfect accessories for electric hammer users, improving working efficiency.