Ingenuity and professional quality Drill quickly and with four-edged heads of reinforced concrete that are durable Features: Four-edged bits Four-edged cutter head design, it is not easy to jam when drilling steel bars, and the cutter head is not easy to chip Self-centering tip It is convenient for the drill bit to be stable and smoothly introduced Four-groove design Fast chip evacuation and reduced wear when drilling at high speeds Tungsten carbide four-edged bits Outstanding performance when drilling in reinforced concrete Through-feed chip flutes The corner design at the top of the drill bit is combined with a wide and short flute Realize fast chip evacuation and high-speed drilling of drill bits Self-centering tip Self-centering when drilling This enables fast drill bit introduction Handle a wide range of working conditions with ease Efficient drilling with great power High-speed drilling is powerful Drilling safety The four-edged cutter head is not easy to get stuck in drilling Bosch four-pit 5 series rotary hammer drill bits Application: concrete, reinforced concrete and other masonry drilling Application tool: electric hammer Material: Tungsten carbide bit Packing quantity: single pack/10pcs/mixed pack