Update your semi with enhanced driveshaft protection, with the Spicer 3.5" x 0.083" Welded Straight Steel Driveshaft Tubing that ensures you're Ready for the Road Aheadâ„¢. Due to its sophisticated design, this replacement tubing is able to enclose the internal components of the driveshaft or PTO driveshaft to deliver improved support while guarding against debris, dirt, and water. Constructed with a rugged and durable body.