Features Enhanced Durability Design: The internal, medium, and external three-flute structure ensures durability and efficiency, preventing collapse during use Reduced Cutting Resistance: The larger cut-out design minimizes resistance, allowing for smoother and easier drilling through various materials Exceptional Drilling Speed: Engineered for fast drilling, this bit creates clean, round holes without gaps, maximizing your working efficiency and saving time Versatile Material Compatibility: Ideal for cutting through steel, aluminum, plastics, and wood, this tool adapts to various project needs with ease Premium High-Speed Steel Construction: Made from high-quality high-speed steel, this tool boasts excellent strength and resistance, ensuring long-lasting performance in tough conditions Features: 1、NOT EASY TO COLLAPSE: Using internal, medium and external three flute design, bring higher efficiency, not easy to collapse 2、REDUCE RESISTANCE: The cut out design is larger, which reduces the resistance when opening the hole greatly, more smooth to drill 3、FAST DRILLING SPEED: Drill bit poss fast drilling speed, round hole without gap, bring high working efficiency, saving both labour and time 4、CUTTING VARIOUS MATERIALS: Hole saw drill bit is suitable for cutting steel, aluminum and other metals, plastics or wood 5、HIGH SPEED STEEL MATERIAL: Made of good quality high speed steel material, come with resistance, good mechanical properties, and high strength Specification: Item Type: HSS Drill Bit Hole Saw Material: HSS Opening Diameter: Approx. 22.5mm / 0.89in Uses: Used for steel, aluminum and other metals, plastics or wood Package List: 1 x HSS Drill Bit Hole Saw 1 x Hex Wrench 1 x Spring Package List 1 x HSS Drill Bit Hole Saw 1 x Hex Wrench 1 x Spring