Knob Diameter: 44 mm Rose Diameter: 50 mm features: Pair of mortice knobs on unsprung roses Fixing screws included Suits doors 35-65mm thick Manufactured in the UK. Available finishes: - Antique Brass - Antique Brass Unlacquered - Imitation Bronze - Polished Brass Lacquered - Polished Brass Unlacquered - Polished Chrome Plate - Satin Chrome Plate - Satin Nickel Plate For any other finishes, please contact our sales team. This product requires a good quality latch.