The Frameless Glass Door Lock Set Comes with 3 keys, made of 304 stainless steel, solid copper inner core, durable and rust resistant Suitable for open type double fan tempered glass doors with thickness of 10-12mm for the door, and gaps between needs should be 6-10mm Advanced polishing process with sanding finish Easy installation, no holes required for the door, comes with allen key and installation screws Easy operation, stable, safe and reliable Features - Made of 304 stainless steel, durable and rust resistant - Suitable for 10-12mm thick double fan tempered glass doors - Process advanced polishing with sanding finish - Easy installation, no door hole required - Easy operation, stable, safe and reliable Description: This glass door lock is durable and rust resistant as it is made of 304 stainless steel. It is suitable for 10-12mm thickness double fan open type tempered glass door. Simple design with thickened stainless steel layer, safe and easy to install. Please note that this lock can only lock on one side or the other and cannot be unlocked on the other side. If you lock from outside, use the key to unlock the door from outside (can't open from inside); if you are locking from the inside, use the rotary switch to unlock the door from the inside (you cannot use the key to open the door from the outside). Specifications: Material: 304 stainless steel Color: Silver Size: 97x 65 mm Shape: half round Fitting for glass door: thickness 10-12 mm Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.