General description This Hole Saw Drill Bit Set includes 10 pieces designed for efficient drilling in concrete, brick, and block. Made from high-quality tungsten carbide tipped material, this set ensures high strength and excellent drilling performance, making it suitable for long-term use. Technical specifications Material: Tungsten carbide tipped Sizes: 35mm, 40mm, 50mm, 65mm, 80mm, and 110mm Extension rod length: 350mm Compatibility and accessories Includes SDS+ arbors Includes guide drills Comes with 2 set screws Includes 2 pilot drill bits Includes 6 core drill bits Includes 1 x 110mm shank Includes 1 x 350mm shank Usage 35mm-45mm drill bits: Ideal for drilling water and heating pipes 55mm-80mm drill bits: Suitable for air conditioning pipes 110mm drill bits: Designed for 4-inch wall fans