Update your semi with an effective method of transferring engine power, with the Spicer 1000 Series Full Round Greaseable Universal Joint that ensures you're Ready for the Road Aheadâ„¢. As a result of its cross-shaped design, this universal joint is able to transfer power to the wheels from the driveshaft as it moves up and down with the suspension. Fashioned with precise measurements and a durable body to resist rust, corrosion, and weathering.