From The Anvil Security Door Bolt (61mm), Black – 91052 BLACK – 61mm

Security bolts are designed to fit into the edge of doors and windows to add improved securitynnThey must be morticed into the door and used in conjunction with a security star key which turns and releases the bolt mechanismnnFinish: BlacknnDimensions:nn-Overall Length: 61mmnn-Cylinder Diameter: 16mmnn-Facing Plate Size: 43mm x 20mm x 2mmnn-Receiver Plate Size: 43mm x 20mm x 2mmnn-Oval Receiver Plate Size: 39mm x 20mm x 2mmnn-Backset: 32mmnnSupplied with matching fixing screwsnn