SK Micrometer torque wrenches provide the ideal tools for automotive and transportation technicians. The dual scale feature allows easy change over from SAE to metric applications. SK's high-quality, The knurled handle provides comfortable non-slip grip. These strong and durable wrenches are adjustable to torque value by rotating the grip of the wrench. Accuracy within +/- 3 percent of indicated value. A simple locking collar locks the handle to avoid changing the torque value while in use. At preset torque value a strong audible and tactile impulse is emitted. Comes in a custom molded plastic case. Made in the U.S.A.