The WA391-1781-083 is a power take off (PTO) yoke and shaft alignment key measuring 0.31 in. wide by 1.50 in. long by 0.31 in. high. This key seats between the PTO yoke and shaft to keep the two components properly aligned and locked to each other during operation.FeaturesPTO yoke and shaft alignment keyPart number WA391-1781-083Width: 0.31 in.Length: 1.50 in.Height: 0.31 in.Aligns and secures PTO yoke to shaftTech SpecsWidth: 0.31 in.Length: 1.50 in.Height: 0.31 in.