Special Detachable Design---Compared with the window limiter on the market, the window limiter has no key, so there is no worry that the key will be lost and damaged. can't open the window. Special detachable design which makes it easy to change the position of the window to fix the window at a small distance.No baby falling --- Help to fix the window and meet the demand of ventilation. The maximum distance of the window opening is 7cm, it is much smaller than the distance babies will fall from the window. The window lock can withstand 27kg of thrust, and 30kg of tension, no worry about the window closing in strong wind. the window or scare babiesAging Resistance: Install the window restrictor with 3M VHB adhesive, no drilling or tools required. 3M VHB adhesive with strong viscosity (the effect will be better after 72 hours). and can be removed easily without any residue, safe for the window. 3M VHH resistance band from -30 to 90 without worrying about summer heat and winter cold.Waterproof and wide range of applications: the PC material and ABS makes it stronger and brings longer service life. Waterproof material and adhesive tape make you worry free from rainy days. The window limiter can be used on casement window and casement window.Number of products: 1 pieceColor: dark greySize: lock: 8.5 x 3.5 cm.Long strip: 20*3.5*1.5cm