The Sealey 35mm Hole Cutting Screw Punch is engineered for larger diameter applications in thin layered materials up to 4mm thick. This size is particularly suited to commercial installations, larger waste fittings and specialist plumbing applications where generous clearances are required. The tool delivers smooth, clean circular hole cuts into the surface material, producing burr-free results across sheet steel, stainless steel sheets, non-ferrous metals, light metals and plastics. Extensively used in the plumbing industry for sink installations, especially for commercial waste systems and larger drainage assemblies, this 35mm cutter is also valuable for electrical and construction trades. The high quality steel cutting and bracing edges ensure reliable cutting performance, whilst the clever design evenly distributes pressure during cutting to eliminate burrs. Operation is straightforwarddrill your pilot hole, attach the cutter, and use a spanner to turn. The threading mechanism app