. . SET OF VIDIA CORONEL FREES 10elBLACK-21209. . The metal drilling plug is used by assemblers, plumbers, service technicians and electricians.It allows to punch even holes in metal surfaces. The hole saw is used with equipment that has the ability to change the working tip, such as drills or grinders.With it, we can cut a hole for kitchen fixtures in a metal sink or punch holes for surface-mounted boxes and switches in sheet metal wall cladding. Carbon technology. Carbide technology gives heat resistance and increases durability. All packed in a convenient and durable carrying case, padded with a hard transport sponge. The set includes the following tools. Set includes holesaws with diameters:16mm18mm20mm22mm25mm30mm35mm45mm50mm53mm.