Safety LocksThis sliding window blocker for homeoffice, you can keep the windows openclosed to avoid a hidden risk of childrenpets climbing the window. Besides, it prevents burglars. delicate craftsmanshipsuperior . Our sliding window locks are strong, solidstable, beautiful workmanship, stainless steel framescan be used many times.Quick Installation: No-drill installation, card type installation, no punching required, easy to change, repair. No additional tools are required. Inside each window lock allen keyholds the rail togetherthe control key.Wide Application security lock for sliding window, tool to instantly lock windowsdoors, not need to drilltools. Easy to removereusable. Suitable for most verticalhorizontal sliding doorsmany track width (adjustable) sliding doors.NoteSize: 68 x 31 x 16mm. our security locks, please make sure your window track thickness is no more than 16mm. The height of the rail is not more than 19 mm. ( not suitable for marks in the center of the window).Technical specifications:Material: stainless steel.Dimensions: 68 x 31 x 16 mm.Colour: silver.Quantity: 2 double window plugsFunctions:- To prevent children from open the windowaccidentally fall. Safety device to stop children's dangerous fingers.- Keep the air freshventilated.- Ideal for use in private homes, dormitories, hospitals, schools, universitiesoffices._x005F_x000D_