The Serozzetta M Range Standard Escutcheon Polished Chrome has a 50mm diameter. 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 polished chrome finish - it is to match the SZM (Serozzetta M Range) handles in the Serozzetta range. Other Variations It is also available with a euro profile or in a satin chrome finish - some of these variations can be found in the related products.