Brown Line Metalworks BLD0212BM Digital Torque Wrench in Black Case Digital Torque Wrench has patent pending technologies like double gear sensing system and ensures repeatable accuracy of +/- 3.5 percdentage both clockwise and counter clockwise, accurate 20-100 percentage of full scale Soft touch over-mold provides comfortable non-slip grip and engineered plastics ensure resistance against common garage fluids and impact resistant housing Large backlit digital display shows both target torque and current read-out; LEDs and digital display provide visual feedback when operating wrench and buzzer creates audible feedback when target torque is reached Digital Torque Wrench ratchet head consist of 1/2 inch drive reversible ratchet, 32-tooth gear provides an 11.25 degree arc while handling high torque loads, forged from Chromium Vanadium alloy to ensure strength Easily switch between feet/pounds, inch/pounds, and nanometer; automatically powers off when not in use for 2 minutes and low battery indicator; conforms to ASME B107.10.2005 standards