KEEPING CHILDREN SAFE: The baby safety lock can help keep sliding windows locked, prevent children from falling, and prevent others from invading. This child safety locks will protect them from injury. Suitable for most doors and windows: The child door safety lock is equipped with a rotary switch, easy to change the distance of the card slot (0.98inch/2.5cm-1.57inch/4cm), easy to use, suitable for most windows and doors. Will not scratch the window: this children's door block can be used for both the window and the door. The child door stopper is non-slip, and with a flexible protective cover, it will not scratch the window card slot. You can use the child safety gate with confidence. Package Contents: This gray child safety gate is made of high quality iron, strong and durable, can be used for a long time. You will receive 2 security locks. Size: 2.36*1.38*0.91inch (6*3.5*2.3cm).