Heavy duty, hardened steel construction with locking feature allowing the tool to be fastened securely to the wiper arm. Combination of swivel-mounted thrust bearing and tommy bar on thrust bolt allows even the most stubborn wiper arms to be lifted off their shafts. Also suitable for battery terminal and alternator bearing removal. Maximum opening: 28mm. Heavy duty, hardened steel construction with locking feature allowing the tool to be fastened securely to the wiper arm. Combination of swivel-mounted thrust bearing and tommy bar on thrust bolt allows even the most stubborn wiper arms to be lifted off their shafts. Also suitable for battery terminal and alternator bearing removal. Maximum opening: 28mm.