OOX3216 Features: * SureGrip® hex design drives the side of the fastener, not the corner * Made in the U.S.A. Color/Finish: * SuperKrome® finish provides long life and maximum corrosion resistance Dimensions: * 3/8"" Drive Flex Spark Plug Socket 13/16"" Warranty: * Lifetime warrantyThis flex spark plug socket has a 3.38 diameter and is .75" in length. * Lifetime warranty does not cover abuse