Features: Enhances your security with our 4PCS Universal Security Rack Bolt Key Set, featuring a metal construction that ensures resistance to rusts and wear, perfect for long terms use on door and window . Each key in this set is designs with a 31mm star shaped end, providing Suitable fit for standard rack bolt lock, making them Multifunction for various residential and commercial applications. Suitable for homeowners and Professional alike, these keys offer a reliable solution for those look to secure multiple locations without the hassle of replacing entire lock systems. Perfect for securing fire door, utility cupboards, and concealed door, these rack bolt keys provide peace in both home and office environment. The ergonomic plastic handle ensures a comfortable grip, allowing for easy operation even in low light conditions, making these keys a practical addition to any security toolkit. Specifications: Material: steel Length: about 80mm/3.15inch Package Includes: 4xSecurity Rack Bolt Key note: Please allow 1 to 3cm error due to manual measurement, please make sure you do not mind before you bid, Due to the differences between different monitors, the picture may not reflect the actual colorful of the item.