The matte black entrance knob set features a modern and stylish finish. The entrance door knob coordinates well with any architectural style, is ideal for bedroom or bath but can be used in any room. They are robust and longlasting for most purposes. High-quality easy installation| 25mm deadbolt| C4 keyway| 4 brass keys| Adjustable backset 60-70mm to fit all standard doors| Suitable for external doors| Ideal to a wide range of traditional and modern interior doors