Ridgid 97837 12" RapidGrip Wrench Wrench&#44; an innovative&#44; heavy-duty&#44; self-adjusting pipe wrench Aggressive&#44; patented tooth design ensures a secure grip. Designed for one-handed operation with a rapid ratcheting action. Spring-loaded hook jaw design quickly adjusts to any size work surface Unique thumb trigger allows users easy application and removal from the work piece.