Specifically engineered for the needs of the professional technician, Dual Action sockets and accessories provide unparalleled versatility by allowing easy switching between the precision and access of a hand tool with the power of air and cordless impact tools. The thin wall design of chrome hand sockets combined with the strength of Impact Sockets creates the Professional Dual Action Socket Series.With a Dual Action you really are ready for action. ACTION Set Features Manufactured from drop forged Chrome Molybdem steel with phosphate finish for greater corrosion resistance. High visibility laser etched markings for easier socket selection Best of both worlds Dual Action - use with impact wrench or by hand. 1/4F x 3/8M, 3/8F x 1/4M, 3/8F x 1/2M, 1/2F x 3/8M, 1/2F x 3/4M Adapters mounted on metal rail with clips Set Includes 1/4F x 3/8M 3/8F x 1/4M 3/8F x 1/2M 1/2F x 3/8M 1/2F x 3/4M Action Tools Corporation was established in Taiwan in 1975. It has been engaged in the design and manufacture of Impact sockets since that time. Respected for the quality products around the world, Action is certified to ISO 9001:2008 ensuring stringent quality control procedures for material, manufacturing, testing and inspection.