This Snap-On QDRIVER4 screwdriver is a reliable and durable tool that will help you achieve precise and accurate torque measurements from 5 to 40 in lbs. It is a top-of-the-line tool, designed for professionals who demand the best quality and performance from their tools. Its brand, Snap-on, is known for producing high-quality hand tools that stand the test of time. This torque screwdriver is designed with SAE measurement system, making it easy to use for various automotive and other mechanical applications. It is a must-have tool for anyone looking for precision torque measurements. Ideal tool for low-torque assemblies, precision applications and dash/under dash work on most domestic and imported vehicles. Driver accepts all standard 1/4 hex screwdriver bits. Cam-over torque limiting clutch-free-wheels 90° when set torque is achieved. Accuracy is ±6% from 20-100% of full scale in clockwise direction. Lightweight, rugged construction. Comfortable ergonomic tri-lobe grip and magnetic bit retention. Textured body provides a non-slip grip. This item was recently calibrated and is in serviceable condition.