Calibration certificates accompany each torque wrench set. Have a 1/2 to 1/4 drive adapter and 1/2 to 3/8 adapter drive adapter; can be used for a wide range of applications. 【Clarity at a Glance】Our digital torque wrench kit is designed with a high-definition LED screen and built-in backlight, providing crystal-clear readability even in low-light conditions. With four unit options - Nm, in-lb, ft-lb, and kg-m - you have added convenience at your fingertips. 【Constructed for Longevity】Constructed from robust chrome-vanadium steel, this heavy-duty torque wrench undergoes a rigorous six-stage heat-treated process and chrome-plated surface coating for optimal resistance to rust and corrosion. Additionally, the electronic torque wrench's smooth surface facilitates easy cleaning. 【Reliable Prompt】The torque wrench 1/2 drive can be a vibrating handle, buzzer, and solid LED light to indicate when the target is reached, ensuring that you can confidently and precisely tighten fasteners on your vehicle or equipment without incurring any damage.