Contract Door Security Bolt, sometimes called a Rack Bolt Sturdy concealed bolt to secure doors and cupboards Includes secrity bolt, keep & fixings The bolt is morticed inside the door edge and can be locked or unlocked via a separate splined key or with a fixed splined turn The bolt has an internal sawtooth rack mechanism into which the splined key is inserted, Weight: 4.409245243697552 Pounds, Manufacturer: Carlisle Brass