Macpherson strut spring compression kit. The kit allows you to tackle the heaviest springs in your vehicle's suspension. The tool features a rugged design that can handle up to 2,645 pounds and keeps the spring from accidentally popping out when compressed. The sturdy construction minimizes bending and deformation even under high stress. Adjustable wide jaws that can be set to fit springs from 8.6 to 12.2 inches in diameter. And the jaws spread from 2.7 to 10.6 inches. The tool is suitable for almost any vehicle. The spring is clamped by tightening the nut with a special wrench. Be sure to apply lubricant to the threads before use to avoid breakage.