This 6-piece set is ideal if you want to prepare plumbing and electrical installations and drill in soft and medium-hard wood, insulation boards, drywall, plastic or metal. It contains 5 hole saw inserts made of bi-metal with Ø 35, 40, 51, 65 and 68 mm, a mandrel with 5/8" thread and a centre drill bit (Ø 6 mm) made of high-performance high-speed steel. This enables you to drill accurately fitting holes with a cutting depth of 40 mm. The special alloyed tool body with HSS toothing ensures a long service life and smooth running. The 11 mm hexagonal shank allows the hole saw inserts to be quickly locked in the chuck of your drill or cordless screwdriver. You receive the set in a high-quality 2-component plastic box in which you can transport the parts safely and store them neatly. The hole saw inserts are TÜV-tested - so you can rely on safe quality products.