This heavy-duty, double-ended spanner is constructed from a single piece of steel with a zinc-plated finish. It is designed to fit both 1/2" and 3/4" backnuts, commonly found on kitchen sink, basin, and bath taps. A tommy bar is supplied for ease of use and leverage. Made from durable zinc-plated steel, it is built to last. The spanner features holes for a tommy bar, making removal of backnuts straightforward.