Door knob (key lock) in satin stainless steel.Easy to install, the adjustable latch can be set at 60mm or 70mm backset. For doors 35mm to 50mm thick.Locking inside and outside knobs preventing unwanted access to the room. It also includes a set of three keys which allow locking from the outside. Suitable for use on bedroom doors or any other interior door where privacy is required. Please note that door hole should be less than 60mm.Stainless Steel Door Handle Entracne Lock Knobs Lock - Key Lock - Copper Core - Latch Size 60 / 70mm< br/> This handle lock set is suitable for use on bedroom doors or any other interior door where privacy is required. The entry lock system features a screwdriver that locks both the inside and outside knobs preventing unwanted access to the room. It also includes a set of three keys that allow locking from the outside.Specification:Adjusting the thickness of the door: 35-50mm Material: Stainless SteelLatch Size: 60MM / 70MMKey number: 3 piecesButton diameter: 53mmRose Diameter: 65mmWeight: 0.5KGNote: The data is all manual measurement, please allow 1-3cm error; due to the difference in light and display, there would be a certain color difference, please refer to the actual item received.