Strong tool for removing the entire valve spring and reservoir washer (OD: 22.9mm) as a unit. This will prevent damaging the sealing surface when using a flathead screwdriver to pry open the washer. No flex on the four arms (Briggs Complaint #19063) and hardened lugs securely hold the top of the spring and lockwasher. It can then be pulled out as a single unit. The rear rivet is secure and the four levers on the back of the tool have no play. Found the steps on the two small expansion bolts to be a little questionable and the overall length of the tool to be a bit long, but overall - I recommend this tool. CarlCenturion