Astro Pneumatic 9507 Wheel Weight Balance Hammer Pliers The Astro Pneumatic 9507 Wheel Weight Balance Hammer Pliers is a feature-loaded tool allowing the user to conveniently remove valve stems and adhesive and cut, modify, remove and install wheel weights – all in one tool. The Astro Pneumatic 9507 Wheel Weight Balance Hammer Pliers’ 7-In-1 design features a tapered punch for broken valve stems, a lever/scraper, crimper for tightening clip on weight tabs, cutter for adhesive weights, hammer for clip on weights, as well as removal pliers and and a pry tool for straightening wheel lips. Features a hidden spring mechanism and is made from precision-forged CR-V.