The ESCO U-Joint Pullers are designed to eliminate the use of dangerous, damage-causing vice and socket or hammering methods by providing a safer solution while assisting in the damage prevention of joints, bearing caps, yokes, or driveshafts. Cast out of high-quality heavy-duty steel, the U-Joint Pullers are manufactured to withstand rigorous daily use. The U-Joint Pullers are available in three sizes: Automotive U-Joint Puller, No. 40302, for automotive applications, Intermediate Medium Duty U-Joint Puller, No. 40301, for Class 3-5 trucks and equipment; and Heavy Duty U-Joint Puller, No. 40300, for Class 6-8 trucks and equipment. They're for use on bearing cups with diameters ranging from 1.25" to 1.75".