The Shark Fin Dual Wheel Separation Bag from Ken-Tool Corp. separates stuck or corroded steel, aluminum, or chrome wheels. The company says it is the first solution with no metal-on-metal contact. The separation bag generates 5,000 lbs. of pressing force and works on 15-inch to 24.5-inch dual and single wheels and tires on trucks and trailers. The Kevlar inner inflation bag is industrial grade and nearly puncture-proof. Deflation is controlled with a quick turn of the slotted valve cap. Pressure range is 90 psi max pushing pressure -150 psi maximum rated pressure. Dimensions are 9.75 inches x 8 inches x 3/8 inches in height deflated and 5.5 inches in height when fully inflated.