This is the Team Associated Factory Team Differential Decoder a must-have for RC tuning pros! The Decoder presents a reliable differential hardness value, eliminating the need for estimations. This measurement serves various purposes, including designing differentials to precise hardness levels, refining adjustments for optimal vehicle performance, comprehending distinctions in oil brands and temperatures, duplicating an already existing differential setup, measuring a ball differential's stiffness, or measuring the wear on a differential over time. Manual available by clicking HERE. Note: A 5V power source such as the USB output on a charger or power supply is required to power this decoder. Specifications Display: 5-Digit LED Input Voltage: USB 5V Length: 2.44in (62mm) Width: 0.94in (24mm) Height: 1.10in (28mm) Weight: 2.08oz (59g) Includes: (1) Factory Team Differential Decoder (1) 1/10 7mm hex adapter (1) 1/8 pin adapter