| This Ad is for 1 Snap-on Tools 9/16" Spark Plug Socket. This socket has no owner marking ID's or Engravings, the outside has more wear than the inside. Printing on sockets is in bold: Snap-on (The Snap-on stamp is 40-60% worn. See picture) Other stamps SS-180 MADE IN USA FOR SPARK PLUGS ONLY 9/16 | Hex Size | 9/16" | | Overall Length (In) | 3" | | Weight Lbs. | .75 | | Number of Points | 6 | | Drive Size | 1/2" | See photos for more information |