Product Details: The Spicer 1760 Series Full Round Greaseable Universal Joint ensures you are Ready for the Road Ahead™, lending to 30% increased bearing life compared to leading competitors. This universal joint permits the driveshaft to move up and down with the suspension while the shaft is moving. This heavy duty u-joint replacement ensures power can be transmitted when the driveshaft is not in a straight line between the semi truck’s transmission and drive wheels. Experience superior life and decreased maintenance time/costs of this universal joint thanks to this universal joint with 180° positioned zerks positioned on both sides for consistent lubrication without rotation of driveshaft.