Application: Suitable for high strength drilling operations such as concrete, brick wall, stone, cement wall, masonry and rocks etc. Material: using drill head High quality carbide cutter, after high temperature quenching, it is more stable and durable, longer service life and stronger impact capacity. Elimination design chip removal: U-shaped helical flute design achieves high-speed operation, rapid chip removal and improved work efficiency. Strengthen the 4-blade cutter head: strengthen 4-blade cross cutter head design, the cutter head is sharp, can ensure better penetration, easier to drill into concrete. Applicable models:SDS Plus (square shank) is suitable for electric impact drilling equipment. There are many different sizes to choose from. Dimensions: 15*1*1cm Color: Silver Material: Carbon Steel