ONEDONE Tiny And Practical Kids Safe Sliding Door Closet/Window Lock -4Pack(white) Easy to Install ,Simply peel 3M tape backing & install in minutes without tools Protects little fingers from getting smashed Works with glass, mirrored, laminate or wood sliding doors Approximate Size:7.5*9cm; material: Strong ABS Plastic Sliding lock prevents curious children and pets from opening sliding windows and doors,keeping child safe