Brand Name: KD | Color: Silver | Length: .045 in. | Number of Pieces: 1 pc. | Packaging Type: Carded | Max Diameter: .045 in. | Spread: .025 The GearWrench Spark Plug Gap Wire Gauge is used to measure the gaps on spark plug electrodes, sizes are stamped on the body for easy identification. | Measures from 0.025 inch to 0.045 inch | Gauge includes 2 electrode adjusting tools | Check the electrode gap of most sparkplugs