Easy to use: Windows locks are easy to install and use, one-handed operation, no keys required Feature: Window caps work minimum tightening distance: 2.5cm, maximum clamping distance: 4cm, the sliding door or window frame should have appropriate space Specification: The package includes security locks for windows to meet your needs, which can open sliding doors and windows within a limited range. Material: The durable and stable iron sliding window lock is durable, sturdy, strong, which can be used for a long time. Function: The anti-theft protection lock is designed to protect children and improve air ventilation, always keep fresh air Descriptions: The window lock sliding can be easily applied to most environments. By partially opening and closing windows, which can prevent children from falling and protect the safety of family members while improving air circulation. The anti-theft protection lock is the household necessity. Features: Sliding window lock -Material: iron. -Size: 6x3.5x2.3 cm / 2.36x1.38x0.91 inch. Notes: Due to the light and screen difference, the item's color may vary. may be slightly different from the pictures. Please allow slight dimension difference of 1-3 cm due to different manual measurement. Package including 2 * Sliding window locks