The Cisa 52310 is a mortice lock with a black painted steel case and cover. It has a double throw deadbolt operated by a key. However, the cylinder is Not included with the lock and should be ordered separately. Supplied with a brass strike, brass faceplate and fixing screws. Double Throw Deadbolt Backset: 40mm Satin Nickel Plated Brass Accepts European Profile Cylinders Cylinder NOT Supplied What's in the box 1 x Cisa 46210-15 Lock 1 x Strike Plate 1 x Fixing Screws