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With the Facom B.S16A1 spark plug socket, you can replace 16 mm spark plugs quickly and safely. Thanks to its overall length of 90 mm, you easily reach deeply recessed spark plugs in the cylinder head without needing extra extension bars. The integrated retainer holds the plug securely in place, preventing accidental drops during installation or removal. Its 1/2" internal square drive connects directly to your standard ratchet, delivering dependable force transmission for servicing cars, motorcycles, and small engines.