Update your semi with enhanced driveshaft protection, with the Spicer 4.095" x 0.18" DOM Straight Steel Driveshaft Tubing that ensures you're Ready for the Road Aheadâ„¢. 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.