Ideal for various towing applications, the square pin safety pin square lock pin spring pin offers robust performance and ease of use. Whether you're hauling a trailer, boat, or camper, this pin ensures a secure fit. To use, align the holes of the hitch and receiver, insert the pin, and engage the spring-loaded latch. This mechanism ensures that the pin stays firmly in place, providing peace of mind on the road. Features -Color:Silver -Material:Carbon steel -Size:7.80X5.00X1.20cm/3.07X1.97X0.47in -Nominal diameter: 10 mm - construction: these trailer hitch are built to withstand heavyduty use and resist wear -Versatile application: ideal for securing trailer hitches, couplers, and other components, these offer great utility in various applications -Secure design: the safety pin ensures a tight and secure fit, reducing the risk of accidental disengagement -Enhanced locking mechanism: the square lock pin design provides locking capability, ensuring the pin remains securely in place -Additional : the integrated spring mechanism adds extra tension, keeping the pin firmly locked and preventing it from coming loose Package list: 2 x Spring