COMPLETE AIRLINE KIT: Inline tire inflator gauge with 1/4" NPT quick-connect plug, thread seal tape, Lightning Chuck, 2 AAA batteries & Quick Start Guide for easy setup. LIGHTNING AIR CHUCK: Includes our all-new, patented lock-on tire chuck with self-locking nozzle & rapid quick-release valve - no more air leaks or fighting with the valve stem for a proper seal.