WORKPRO 5/8" Swivel Spark Plug Socket 3/8" Drive x 4" 12 PT 360° Swivel Magnetic

It features a 12-point design that can grip the flat sides of the fastener head, not corners, to prevent round-off. 360° SWIVEL DESIGN: The spark plug has 360-degree swivel action for maximum flexibility, making tight spaces easily accessible.