The Heritage Brass V4000 Standard Escutcheon Polished Chrome 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 Locks & Latches category.
Other Variations
There are other variations of this escutcheon available in different finishes – these can be found as separate products in the Escutcheons category.