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Your cart is empty.Used to clean up dirty or damaged spark plug threads. Consists of a special 12mm spark plug thread with a lead in (for proper alignment) and flutes (for dirt and chip relief). Also features a 5/8in. hexagon with O-ring and female 3/8in. square drive;. Requires the use of a 5/8in. spark plug socket, or the female square. Requires the use of a male 3/8in. square drive. Special 12mm spark plug thread ensures proper engagement.
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