Prepare your semi to be Ready for the Road Ahead, with the Spicer 5.118 x 0.197 DOM Straight Steel Driveshaft Tubing that provides enhanced driveshaft protection. To deliver improved support while guarding against water, dirt, and debris, this replacement tubing encloses the internal components of the driveshaft or PTO driveshaft. Fashioned with an ultra-strong and durable body.