The Ezarc SDS Plus H4 Cutter Carbide Drill Bit Set includes 4 cutter and 4 flute design, making it suitable for drilling tasks in re-enforced concrete. masonry. marble, brick etc,etc. The brand EZARC ensures high quality and durability, providing reliable performance for your drilling needs. These drill bits are a valuable addition to any DIY enthusiast or professional workshop, offering precision and efficiency in drilling operations.