The Valve Lash Adjustment Tool is a compact and lightweight hand tool designed for adjusting valve lash with an angled feeler gauge. It includes a jam nut valve adjustment feature, making it convenient for automotive maintenance and repair. The tool's dimensions of 8.39 x 2.09 x 1.65 inches and weight of 11.7 ounces make it easy to handle and store in a toolbox or garage. Ideal for mechanics and car enthusiasts looking to accurately adjust valve lash for improved engine performance.