High strength, high hardness: Carbide drill bits are made of high-hardness tungsten carbide, with high strength and hardness, providing strong wear resistance and impact resistance, and will not deform or break under high-intensity operation, fast hole entry and precise positioning Four-edge serrated eccentric drill bits: 4 flute drill bits adopt four-edge serrated eccentric drill design four-edged, staggered edges form a special cutting path, the drilling process is clean and precise, reducing friction while greatly reducing the possibility of slippage or deflection during the entire drilling process Wide Flute Design: The enlarged flute of the masonry drill bit set removes chips smoothly, effectively preventing chip accumulation and retention, high-speed operation and fast drilling speed, and improving the amount of chip waste discharged during high-speed operation Wide Flute Design Hex Shank: The hex shank design of the brick wall drill bits not only provides a firm grip, but is