1-4 Inch Universal Joint allows drive shafts to move up and down with the suspension while the shaft is moving so power can be transmitted when the drive shaft isn't in a straight line between the transmission and drive wheels. Rear-wheel-drive vehicles have 1-4 Inch Universal Joint at both ends of the drive shaft. We have a team of experts who test this joint on several parameters before the final dispatching from our unit. We strive to deliver this within a stipulated period of time.