FIND YOUR EXACT TOP-DEAD-CENTER WITH THIS HIGH QUALITY TIMING KIT. INCLUDES DIAL INDICATOR GAUGE WITH 0-5mm RANGE IN .01mm INCREMENTS, 14mm SPARK PLUG THREAD ADAPTER AND EXTENSIONS (CONTACT POINTS) IN DIFFERENT LENGTHS FOR AIR AND WATER-COOLED ENGINES. LOW PROFILE DESIGN WILL CLEAR MOST FRAME TUBES.