Features: Experience precise and durability with the bi metal hole saw set, designed to deliver smooth, standard holes in a variety of materials including wood, plastic, upvc, plasterboard, and thin metal sheets. Crafted from bi metal and high speed steel (hss), this hole cutter kit is rust proof and features a hook tooth efficient design for enhances cutting performances and longevity. Ideal for DIY enthusiasts, professional carpenters, and construction workers, this versatile tool caters to anyone needing reliable drilling solution across different projects. Perfect for use in homes renovations, woodworking projects, and industrial applications, the hole saw set ensures efficient and precise drilling every time. With its universal triangular handle design, this core drill bit set offers compatibility with various drill chucks, making it essential addition to your toolkit for seamless operation. Specifications: Component:Metal Diameter:Approx.20mm/40mm/60mm/80mm/100mm Length:Approx.70mm Package Includes: 1pcs Drill Bit 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 coloring of the item. Thanks for your understandings.