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. Heavy-duty die-cast aluminum body. Weighs 2.5 ounces. Molded rubber flap to protect against abrasion of inner tube. Ribbed alloy contact surface locks tire securely to rim. Recommended for use on all off-road machines and any application using low tire pressure. Recommended tightening torque on nut is 14 ft-lbs.