The Excel Hardware Standard Escutcheon Dual Chrome/ Brass has a 53mm 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. This escutcheon is made from zinc alloy & has a dual polished chrome & polished brass finish - it is to match the Orbit handle in the Excel Hardware range. Other Variations It is also available with one of the following finishes: Black nickel Dual chrome/black nickel Electro brass Oil rubbed bronze Polished chrome Satin ch...