Motion Pro is dedicated to producing the most versatile, unique and durable products for professional and home use. Motion Pro tools are designed to be simple to use, yet durable enough to withstand the harshest conditions. One of their goals is to offer tools of convenience. Do it right the first time with Motion Pro Tools. Made of chrome-vanadium tool steel. Sizes included: 1.5, 2, 2.5, 3, 4, 5, 6, 8, and 10 mm. Ball end allows for better access to Allen-head bolts (up to 25-degree working angle). Convenient holder included.