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. Adhesive backed steel wheel weights. Adhesive will work on spoked or cast wheels. Made from steel, lead free. Detailed Specifications: Silver powder-coat finish. 144 pieces of 1/8-ounce (3.5 gram) weights. Twelve strips per box with twelve 1/8-ounce (3.5 gram) segments per strip. 10.2 mm x 13.1 mm, vertical orientation for proper alignment when used in combination with 1/4-ounce weights.