materials: which is sturdy and durable and has a longer service life..Stylish elegant. Wide range of applications: Quickly installed door handles with locks and keys, suitable for home or business use, such as: bedrooms, schools, shopping malls, apartments, offices. specification: Product Name: Indoor Door Lock Key: mechanical key Suitable for door thickness: 25-45mm Scope of use room or bathroom or living room or meeting room, etc. Tips: The product may be updated constantly, The Actual Product May Have Slight Differences Or Color Differences the color and appearance may be changed, please don't mind. And take a consideration before place the order if you have request for color or appearance. Material: Aluminum alloy colour: Silver Package Contents: 1 x door handle locking kit (accessories are randomly colored. Cannot be chosen the specific color.) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.