Uses 1480 series U joint. Fits Turbo 400 and Super T-10 trans with roller/needle bearing tailhousings. "D"=6.145" Rapid release yokes allow the driveshaft to be disconnected at the transmission rather than at the pinion. The cap design prevents over-tightening and possible damage to the u-joint cups. Care must be taken not to mix u-joint caps and maintain indexing after shaft is balanced. MW-built driveshafts with these yokes have identifying index marks. Manufactured from high strength 4140 steel. 100% machining creates a perfect balanced part. Includes 39075 cap kit.