This limited position chain is a three-point linkage accessory for agricultural tractors, produced using the shrinkage tube and welding process. The two ends are threaded to adjust the length of the product according to different needs. It can effectively limit the range of movement of the tractor during operation, increasing precision and safety. In addition, this limited position chain product is also very easy to install and use, allowing for quick connection and disassembly, thereby improving agricultural production efficiency. Due to its high quality and reliability, the product has gained widespread recognition and praise in the market.