Spark Plug Gap Gauge, Tool Type 12-Blade Feeler Gauge with 6-Wire Spark Plug Gap Gauge Set, Length 3 5/16 in, Width 1 in, Height 1 21/64 in, Capacity 0.010 in to 0.045 in, Material Steel, For Vehicle Tool Category Engine, Color Silver, Includes Double-Ended Electrode Tool, Number of Pieces 18, Application Used with Standard Ignition Systems, For Use With Standard Ignition Systems, Set and Measure Spark Plug Gaps Plus Other Ignition Clearances