E-Z Grip Spark Plug Gap Gauge Air Filter Back up pad itself has

Back up pad itself has a 5/16-24 internal thread

Digital Tire Inflator

while the nylon won't

Most common chamfer

E-Z Grip Spark Plug Gap Gauge Air Filter Back up pad itself hasE Z Grip Spark Plug Gap Gauge Features and Benefits: Tool includes a recess specifically designed to adjust electrodes Metric gapping scale shown on reverse side Has a pocket clip This patented universal spark plug gauge is always at your fingertips by utilizing the "pocket clip" feature for your shirt pocket. Full range coverage for all spark plug gapping requirements from . 020 to . 080. This range includes older model vehicles and later model