Features and Benefits:Socket system features the Pass-Thru™ drive system that links drive tools and sockets;Pass-Thru™ socket system eliminates the need for deep sockets;Reach fasteners in tight spaces with ease;Hard stamped size markings;The Pass-Thru™ socket and GearRatchet™ ratchet system by GEARWRENCH was designed to improve productivity and access on every job. The GearRatchet™ ratchets need as little as 5� to move fasteners vs. 30� for standard wrenches and are 40% stronger than standard ratchets by eliminating the drive tang. The ratchets are up to 50% thinner than standard ratchets providing superior access to even the most hard-to-reach fasteners.