SMA Products TRACTOR YOKE 1-3/8" 21 SPLINE QUICK DISCONNECT SERIES 14 - 971-1021421. TRACTOR YOKE 1-3/8" 21 SPLINE QUICK DISCONNECT SERIES 14 TechSpecs: Brand: Weasler Center of Bearing to End of Yoke: 4-5/16 Inch Cross & Bearing Cap Diameter: 1-1/8 Inch / 28.58mm Cross & Bearing Overall Length: 2-5/8 Inch / 66.68mm North American PTO Series: 14 PTO Product Category: Yoke PTO Product Sub Category: Tractor Yoke Tractor Yoke Lock Type: Quick Disconnect Tractor Yoke Size: 1-3/8" 21 Spline Interchanges: 14N220TQD102-1421A1021421 14N220TQD 102-1421 A1021421 This is an aftermarket part.