Item Type: Sliding Door Window Lock Material: Plastic Quantity: 20Pcs Weight: 59 ~ 85 g / 2.1 ~ 3 oz(approx.) Package List 20 x Sliding Door Window Lock 1SAFE PROTECTION: Type 88 door and window non collision block is specially used for translation window and sliding door limit block, can prevent excessive opening or closing when hitting wall or other obstacles, so as to ensure home safety 2EASY TO INSTALL: The installation of type 88 door and window non collision block is very simple, only need to install on the pivot of the window or door. After installation, can ensure that the doors and window stay in one position smoothly, and will not be easily blown and shaken by the wind 3WEAR AND CORROSION RESISTANCE: Type 88 doors and window non collision block is made of excellent plastic, with excellent wear resistance, corrosion resistance and high temperature resistance, long service life, will not be easily damaged 4FOR RENOVATION AND MAINTENANCE: Type 88 doors and window non collision block is an ideal choice for home renovation and maintenance, which can greatly reduce the cost of home maintenance 5MULTIPLE FUNCTIONS: Type 88 door and window non collision block is not only suitable for horizontal window and sliding doors, but also can be used for other household facilities, such as drawers, cabinets, shelves, etc., has a wide range of applicability