This item is well made of premium material for durable and practical use. They are designed for refrigerator doors, cabinet doors, window to provide your baby with a hassle-free environment. It is convenient and easy to install and hold securely. Features -Material: ABS, Stainless Steel, Zinc Alloy - Password lock size: 31.30X6.80X1.85cm/12.30X2.67X0.73in - Key lock size: 27.60X5.60X2.40cm/10.85X2.20X0.94in - for home, public and commercial safety, also designed specifically for children 's safety. - It is convenient and easy to install and hold securely. - It is also great refrigerator, cabinets, window decor. - Make of high-quality material, able to withstand greater pressure, not easy to damage. - Suitable for most types of windows and small doors, suitable for many kind of materials such as aluminum and metal.