Drive shafts, also called articulated shafts, will be shafts that include two universal joints. The easiest kind of drive shaft has a joint at each end. The configuration is essentially an extended double joint for overcoming distances and Front Drive Shaft offsets between your drive and the influenced load. Drive shafts also provide a remedy for bridging angular misalignment.
Telescopic Drive Shafts
Drive shafts can include a telescopic middle element that permits quicker and simpler repositioning than likely with a rigid two-joint shaft. They enable easy size adjustment in axial misalignments.
Spring-Loaded, Quick-Change Shafts for Reducing Downtime
Spring-loaded drive shafts contain two back-to-back sole universal joints connected with a spring-loaded intermediate shaft. It allows the drive shaft to be quickly removed and replaced without tools. Pinning of external yokes is not needed because the spring 
stress on the intermediate shafts keeps the quick-alter universal joint secure at each end.
Fail-Safe Stop Solution
Spring-loaded drive shafts could be customized to add a fail-secure solution. If the application form critically exceeds the joint's ranked torque potential, the drive shaft could be designed to fail and prevent in a safe style, without damaging the motor.
Your drive shaft may be the link between your transmission and front or rear differential. It features universal joints on both ends to allow it to rotate freely even while the rear end moves over bumps in the road. The travel shaft is carefully well balanced when it's mounted, and an unbalanced travel shaft can bring about problems. A bad travel shaft or prop shaft can vibrate when under a load or during deceleration. If this goes on, your u-joints could be damaged and fail. If a travel shaft fails and disconnects, this can cause a large amount of damage to your automobile and keep you stranded.
THE PRODUCTS shaft assemblies are remanufactured to ensure an extended and troublefree service lifestyle. All shaft assemblies are completely disassembled, cleaned and inspected.
Only those elements that meet original OEM specifications are reused. All the pieces are replaced with fresh or OEM-specific remanufactured components.
All shafts are reassembled with new universal joints and CV centering kits with grease fittings and so are then completely greased with the proper lubricant. All shafts happen to be straightened and computer balanced and tested to closer tolerances than OEM specs.
The drive shaft is the part on the lower correct side of the picture. The different end of it would be connected to the transmission.