The Sealey 40mm Hole Cutting Screw Punch is the largest option in the range, designed for substantial fittings and heavy-duty applications in thin layered materials up to 4mm thick. This generous cutting diameter is ideal for large waste outlets, commercial drainage systems and specialist installations where maximum clearance is essential. 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. Particularly valuable in the plumbing industry for commercial sink installations, large waste fittings and industrial drainage assemblies, this 40mm cutter is also employed across electrical and construction trades for specialist applications. The high quality steel cutting and bracing edges provide robust performance, whilst the clever design evenly distributes pressure during cutting to ensure burr-free holes. Operation is simpledrill your pilot hole, at