Hardened steel plates to defend against drilling. Aditional security from 20mm bolt throw. Suitable for both left and right hand opening doors. Designed for both sprung and unsprung door furniture. Hardened steel rollers in dead bolt, revolves to resist hacksawing. Product has both Kitemark and CE marking. Rebate kit available (see related products) Sizes: Case Depth: 64mm Backset: 44mm Case Height: 109mm Centres: 57mm Forend Length: 162mm Forend Width: 26mm Finish - Brass Complies with both BS EN 12209 & BS 3621:2007 (Demands of the insurance companies and police) Contents : Lock, 2 keys, box, striker, forend face plate, screws, escutcheons and fitting instructions. Keyed Alike - More than one cylinder can be operated with the same key. Please order at the same time as each set of cylinders will have keys to fit each other.