This bi-metal hole saw insert is particularly suitable for use in metal (especially stainless steel), plastic, soft and medium-hard wood, insulation and drywall panels. The specially alloyed tool body and vario-toothing made of high-performance high-speed steel ensure smooth running and a long service life. The hole saw insert has a ½" threaded connection (12.7 mm) and can be used with the mandrel incl. centre drill (Ø 6 mm) made of HSS (item 5957000). With a possible cutting depth of 40 mm and availability in various diameters (Ø 20 - 29 mm), it is a versatile helper for numerous interior finishing and metal construction projects. The hole saw insert is TÜV-certified - so you can rely on a safe, high-quality product.