Black & Decker™ Switch and O-Ring is designed for 14, 12, 16 ga shears, 1 1/2" die grinders, 4", 4 1/2" angle grinders, 4 1/2" grinders, 4 1/2" grinder snap on, small angle grinder, body grip 2-speed jig saw, 16, 14 ga nibblers, plate joiner and 4 1/2" sanders/polishers.