GoJak Dollies are the solution to your automobile positioning problems. GoJaks operate on the principle of a quick action, bi-directional, double-pawl ratchet. Mechanical leverage applied to the foot pedal progressively "squeezes" the vehicle tire between the rollers until the tire lifts smoothly off the ground. The rollers touch only the tire and no contact is made with the vehicles frame or undercarriage. The low center of gravity after lifting helps make these dollies safe and stable in use. The pure mechanical design eliminates the need for electric power, compressed air, or slow hydraulics.