Identifies Torque Issues: If a lug nut moves, the nut & stud should be inspected - TIA & TMC recommended practices. Designed to Melt: Identifying wheel end issues causing excess heat, such as wheel bearing failure. Only Point-to-Point Indicator: 2x the teeth for more accuracy. The Easiest to Install: Slides on stays on! Torque Check Visual Inspection of Lug Nuts That May Have Become Loose to Prevent Wheel Offs Overall Length: 2-1/4"