The From the Anvil Oval Mortice/Rim Door Knob Set Polished Brass has detachable roses enabling it to be used with a rim lock or mortice lock/latch. It is for use on doors with a 50mm maximum thickness. The knobs measure at 60mm x 40mm with 60mm roses and project 65mm from the door. The set comes complete with two knobs, threaded spindle and fixings. Polished Brass Door Knobs The door knobs have a polished brass finish and can be used internally or externally. Other Variations It is also available in a polished nickel finish - sold as a separate product.