This 6-piece set is ideal for preparing plumbing and electrical installations and for drilling in metal (especially stainless steel), plastic, soft and medium-hard wood, insulation materials, and drywall. It includes 5 bi-metal hole saws with diameters of 25, 29, 35, 51, and 68 mm, as well as a mandrel with a 6 mm center drill made of high-performance high-speed steel (HSS). This allows you to achieve precise holes with a cutting depth of 40 mm. The hexagonal shank enables quick locking of the hole saws in the chuck of your drill or cordless screwdriver. The set comes in a high-quality 2-component plastic box, allowing you to transport the parts safely and store them neatly. The hole saws are TÜV-certified, ensuring you are using safe quality products.