Update your vehicle with improved power transfer, with the Spicer 4" x 0.134" 1710 Series 16-Spline Steel Driveshaft Stub Shaft that ensures you're Ready for the Road Aheadâ„¢. Due to its sophisticated design, this replacement piece is able to transmit rotational power so that a vehicle's wheels can rotate in a forward or backward motion. Constructed with exceptional strength and durability.