Connect and transfer torque between two shafts that are misaligned at an angle. Your shafts’ misalignment will affect the speed and torque these U-joints will be able to transmit. The more the shafts are misaligned, the less speed and torque they’ll be able to transmit.

Ball-and-socket U-joints rotate in any direction, just like your shoulder. They have an oil reservoir that holds lubricant and feeds it slowly to the ball and socket.

Steel U-joints are strong and handle more torque than zinc U-joints. U-joints for round shafts connect to shafts with spring pins (included with some U-joints). U-joints with spring pins already have holes, so you only need to drill holes through your shafts.