The Weed Eater 530071661 Trimmer Drive Shaft Assembly helps transfer rotational power from the engine to the cutting head for reliable trimming performance. Designed for compatible Weed Eater trimmer applications, this assembly supports the drive system and helps maintain consistent cutting-head operation. It is a practical replacement for a worn, bent, damaged, or faulty drive shaft ... https://www.wholetoolbox.com/weed-eater-530071661-trimmer-drive-shaft-assembly/530071661.html