General description The Alloy Hole Saw Set includes 12 high-speed steel drill bits designed for cutting through thick materials such as steel plates, cast iron, and stainless steel. The blades are made from high-quality alloy, ensuring durability and resistance to cutting. This set is ideal for both electric and bench drills. Technical specifications Effective length: 20mm Total length: approximately 65mm Shank diameter: approximately 9mm Material: alloy Color: Silver Sizes included: 15mm, 16mm, 18mm, 20mm, 21mm, 22mm, 25mm, 26mm, 28mm, 30mm, 35mm, 50mm Compatibility and accessories Compatible with electric drills and bench drills Includes 12 drill bits of varying sizes Usage Recommended to use coolant when cutting Suitable for drilling thick steel plates, cast iron, stainless steel, and non-standard angle iron Other information