[Specification] 1. Product composition: 2 L-shaped fixing pin, 2 spring and 2 rolling pin. 2. Single product size: pin diameter: 9/16 inch,pin length: 5-1/4 inch. 3. In order to prevent the limit pin from falling off during use, the aperture on the L-shaped limit pin is usually smaller than the diameter of the limit pin. When installing, you can use a tool to knock the stop pin into the hole until it is firmly stuck in the correct position you need. [Easy Maintenance] A spring maintenance kit suitable for carrying the trailer door pin 819T with you. Guardrail door spring maintenance kit can improve the fixity of trailer door and provide a reliable solution for maintaining the stability of goods during transportation. [Compatible models] Our 819T repair kit is compatible with 5x0lgw2k, 5x8spw, 5x8gw2k, 5x8sp, 5x10gw2k, 4x8ng, 5x8sps, 4x6g, 6x8gw13, 6x8gw2kpt, 5x10ssg, ex10gw, 5.5x10gptled, 5xxbgw, 5x10gwhs. 6x14gw2brk, 6x12gwibrk, 6x12gwhs2brk, 6x166whs2brk and other models of portable trailers are compatible. The main body of our 819T trailer door spring maintenance kit is made of high-quality metal, and all parts are covered with black oxide film, which can effectively prevent the spring from rusting and greatly prolong its service life. The spring has large wire diameter, high rigidity and strong bearing capacity, which firmly locks the trailer door . In addition, the accurate pin diameter and pin hole design can be perfectly compatible with your practical trailer [Easy to install] Accurate design ensures the convenience of installation. You only need to remove the old trailer , insert the L-shaped pin of our 819T trailer lifting replacement through the pin hole and spring, and then fix it with the stop pin., Weight: 1.1464037624 Pounds, Manufacturer: NONDK