A-301-1200-AI Shaft Weld Yoke w/ Bearing GrooveOne New Aftermarket Replacement 12 Series Shaft Weld Yoke with Bearing Groove for Weasler PTO Drivelines This aftermarket replacement 12 Series North American (domestic) shaft weld yoke with bearing groove is a precision driveline component used in PTO shaft assemblies on agricultural and implement equipment. The yoke welds onto a square shaft and includes a bearing groove to retain the guard the guard must rotate freely on the yoke after