General description This is a set of 4 patio sliding door safety locks designed to prevent accidental opening of windows, providing added safety for children and enhancing home security. Technical specifications Material: Zinc Alloy Includes: 4 sliding locks and 8 universal keys (2 keys per lock) Installation Easy to install with included safety accessories Equipped with stainless steel screw caps Recommended to mount locks at the top and bottom for maximum security Usage Suitable for most swing or sliding doors and gates Ideal for homes, schools, and other places where child safety is a concern