Features and Benefits:�3/8" Dr. x 18 mm spark plug socket�Size stamped for easy identification�Knurled ring around socket base allowing for a secure grip in greasy or oily conditions�Chrome vanadium construction�Mirror polish finish3/8" Dr. x 18 mm spark plug socketSize stamped for easy identificationKnurled ring around socket base allowing for a secure grip in greasy or oily conditionsChrome vanadium constructionMirror polish finish