These Made in Japan spark plug sockets feature a unique spring retention system that safely & securely grips spark plugs during work.
- 3/8" (9.5mm) square drive
- For use with spark plugs
- BMW specific fitment (16 mm)
- Spring retention system – two stainless steel spring clips safely & securely hold the spark plug across the hex flats
- Internal brass guide ensures perfect alignment of the spark plug into the cylinder head preventing thread damage
- Internal brass guide minimizes stress loading and possible damage to the ceramic insulator
