The From the Anvil Tewkesbury Square Mortice Door Knob Set Polished Nickel is a very ornate piece of door hardware and is unsprung for use with mortice latches. The knobs measure at 54mm with 63mm roses and project 62mm from the door. The set comes complete with two knobs, spindle and fixings. Polished Nickel Door Knobs The door knobs have a polished nickel finish and can be used internally or externally. The highly polished nickel plating is applied to the solid brass and is unlacquered as it will not tarnish.