Suitable for use with any of our 57mm centre sprung lever lock handles. Product is 'Keyed to Differ'. Supplied with matching SS wood screws. Designed to match our Polished Nickel, Polished Chrome and Pewter lever handles. Case Size:109mm (H) x 17mm (T) Case Depth: 64mm Backset: 44mm Centre: 57mm Forend Size: 162mm (L) x 26mm (W)