Get your semi Ready for the Road Aheadâ„¢ with enhanced driveshaft protection, with the Spicer 3" x 0.083" Welded Straight Steel Driveshaft Tubing. This replacement tubing encloses the internal components of the driveshaft or PTO driveshaft to deliver improved support while guarding against dirt, debris, and water. Engineered with a rugged and durable body.