The Astro Pneumatic Tools 21 Piece 3/4″ Square Drive Socket Set is a high-quality set designed for automotive maintenance and repair. Manufactured by the Astro Pneumatic Tool Company, this set includes 21 standard 6 point sockets ranging in size from 7/8″ to 2″. The sockets are designed for use with SAE measurements and come in a durable hard carry case for easy storage and transport. This set is a valuable addition to any mechanic’s tool collection, providing the necessary tools for various automotive applications.