Faster than using a press or chisel. Less than half the cost of Press-type. Will not damage drive shaft and axle shaft ears like a press and a chisel will. Fits a wide range of U-Joint Caps, up to 1-5/16" diameter. Use the driver with an air hammer to remove u-joint caps Quickly removes the U-Joint Cap from the Drive Shaft on most rear wheel drive vehicles. On some vehicles the u-joint is retained with plastic from the factory. The plastic must be removed prior to driving out the u-joint caps. This tool allows you to remove the u-joint with out the risk of damage to the drive shaft yoke.