Features: Premium YG10X alloy and 45# steel construction delivers 50% longer life than standard hole handsaws, with triple blade design for smooth cut and reduced burrs in metal sheets. Features 8 sizes (16 35mm) with optimized chip removal grooves and 6542 bits for precise alignment, ideal for stainless steel and alloy drilling tasks. Perfect for DIYer enthusiasts, construction professional, and repair technicians requiring metal cutting tools for varied projects. Tackle stainless pipe installations, workshop fabrication, or home appliance maintenance effortlessly with this multi size hole handsaw. Organized portable case ensures quick access to each alloy steel hole cutter, minimizing job sites clutter while maintaining blade integrity during transport. Specifications: Component:45# steel Size ranging: Hole opener diameter: 16mm, 18mm, 20mm, 22mm, 25mm, 35mm Packaging properties: Portable packaging box Package Includes: 1 Set Metal Hole Cutter note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you donot mind befores you order. 2.Due to the differences between different monitors, the picture may not reflect the actual color. Thanks for your understandings.