Believe it or not, vehicles’ spark plugs in the 1920s and 1930s were cleaned routinely because they gummed up quickly due to leaded gasoline and stop-and-go driving. Nowadays, we have unleaded gasoline, fuel injection, and higher driving speeds to get 100,000 miles out of a spark plug. This cleaner and re-gapping machine was a staple in many automotive repair shops and helped the mechanics service AC Spark Plugs. It features a painted aluminum base with two metal sides and an open back where a canvas bag sits. The top is metal with a shield that covers the spark plug. The cleaner is in excellent condition, with typical chipping on the base and minor scratches on the sides. Both of the signs have excellent gloss and sharp graphics. These machines are from days ago and will look great in your man cave. 21075-TPP