RapidGrip quick one-handed operation makes your jobs move faster. The spring-loaded jaw design provides rapid action. Unique combination heel/hook jaw design aggressively bites the work piece and ensures a secure grip & Aluminum RapidGrip is a quick one-handed operation and 35% lighter than cast iron models, makes your jobs move faster. Unique combination heel/hook jaw design aggressively bites the work piece and ensures a secure grip.