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. Nylon-reinforced vinyl fuel line. Braided nylon within the wall gives added strength. Outstanding appearance for custom fuel lines. Sold in 25 foot rolls. Flexible down to +25 degrees Fahrenheit. Maximum operating temp is 150 degrees Fahrenheit. Made in the U.S.A. Notes: Use stepless clamp (sold separately) to install. NOT for use with fuel injected engines.