Constant velocity joints allow a drive shaft to transmit power through a variable angle, at constant rotational speed, without an appreciable increase in friction or play. They are mainly used in front wheel drive, and many modern rear wheel drive cars with independent rear suspension typically use cv joints at the ends of the rear axle halfshafts, and increasingly use them on the proshafts. Constant-velocity joints are protected by a rubber boot, a CV gaiter. Cracks and splits in the boot will allow contaminants in, which would cause the joint to wear quickly.

Drive shaft is a mechanical component for transmitting torque and rotation. The axle shafts transmit motion to the wheels, allowing them, where required, to turn at different speeds in order to cover paths of differing lengths. The front wheel, and also the steering wheel, the drive shaft used to promote the development for FWD and 4wd vehicles as well.

The boot kit consists of: boot, clamps, locking rings and grease. The boots are made with two types of materials: neoprene or thermoplastic. Oil resistant, fire resistant, resistant to high and low temperature 40-120, ozone resistance, acid-base resistance, and high tensile strength and tightness.