The 83/45 and 83/40 are part of The Best Rekeyable Ever 83 Series of padlocks. They are mostly used to secure grids, doors, gates, cabinets, tool boxes, cellar windows, sheds, etc. These padlocks feature a solid brass lock body and a hardened steel shackle with NANO PROTECT™ coating for extra corrosion resistance. A plastic cover to protect the cylinder against moisture and dirt is available on request.