Tools Powerbuilt | Powerbuilt 3/8-Inch Drive Metric Spark Plug Socket 21Mm 643010

6 Point Deep Well Thin Wall Mirror Polished Chrome Vanadium Socket. Rubber Retaining Ring Holds Plug Securely. Center Hole Punched For Added Work Depth. Chamfered Opening For Easier Mating To Plug. Meets Or Exceeds Ansi Standards.