To ensure the security and ease of use for your trailer, start by attaching the latch to both and the frame. Once the latch is securely in place, insert the spring latch pin to lock it firmly. This setup not only enhances the overall security of your trailer but also simplifies the process of loading and unloading. The spring latch pin, with diameter of 6.3 millimeters and a length of 56 millimeters, is designed to provide a robust and reliable locking mechanism. This makes it an essential component for anyone looking to improve the functionality and safety of their trailer. Features -Color:Silver -Material:Stainless steel -Size:6.50X5.00X1.10cm/2.55X1.97X0.43in -Multiple safety pin sizes: these safety pins come in various sizes, making them suitable for a wide range of rv trailers and ensuring a great fit. -Stable and reliable: the unique square and round pin design offers enhanced stability, keeping your trailer components securely in place. -Fixed lock pins: designed to prevent parts from loosening or getting lost, these lock pins ensure a secure connection at all times. -Effortless installation: the trailer latch and fixed buckle system allow for quick and easy installation and removal, making maintenance simple and efficient. - metal: constructed from durable metal materials, these components are built to withstand regular use, ensuring performance Package list: 1pcs x RV security pin