The Serozzetta Square Standard Escutcheon Black Nickel measures at 51.5mm x 51.5mm. This is to be used with a 3 or 5 lever mortice deadlock or sashlock; some of these can be found in the related products or in the Hinges, Locks & Latches category. Zinc Alloy Escutcheon This escutcheon is made from zinc alloy and has a black nickel finish - it is to match the Cube and Equi handles in the Serozzetta range. Other Variations It is also available in the following finishes: Polished chrome Satin chrome Some of these can be found in the related products.