The Toro 1216991 is a genuine OEM shoulder bolt designed for secure fastening in various Toro commercial and residential equipment. This high-quality steel bolt features a 9.525 mm (3/8 inch) shoulder diameter and a 63.5 mm (2.5 inch) shoulder length, ensuring precise fitment and reliable performance. It is commonly used in models such as the Groundsmaster 3280-D, Reelmaster 3100-D, Workman MDX, Z Master 7500-D, and ProLine H800, providing essential structural integrity for critical assemblies.