This is the Tuning Screwdriver and Temp Gauge from THS Racing.

FEATURES: All aluminum construction Allows drivers to check engine temp, and flip tool to other end to adjust carburetor Celsius or Fahrenheit temp readout Battery condition icon on LCD

INCLUDES: Tuning Screwdriver and Temp Gauge Two LR44 1.5v cells Rubber Probe Protector Wrist Strap Instructions  

BOX DIMENSIONS: 2.88" W. X .88" H. X 8.25" L. BOX WEIGHT: .23 LBS.