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The 1/2" Universal Joint THHUJ1121 is engineered to provide maximum flexibility when working with fasteners in hard-to-reach or angled locations. Designed for smooth and consistent torque transfer, it allows sockets and extensions to operate efficiently without binding. Manufactured from durable, high-strength materials, this universal joint delivers long-lasting performance under demanding automotive, industrial, and workshop conditions. Ideal for professional mechanics and DIY users, it enhances accessibility while maintaining control and reliability during fastening and removal tasks.

A 1/2-inch drive spark plug socket designed for installing and removing spark plugs in automotive engines. It fits a standard 1/2″ ratchet or breaker bar, making it usable with most mechanic tool sets for maintenance or servicing of vehicles like cars, motorcycles, generators, etc.

• Removing and installing 21 mm spark plugs

• Automotive maintenance where access requires a socket with retainer

• Works well for cars, motorcycles, and other internal combustion engine spark plug jobs