20' coils. 99% pure copper. Annealed for ready bending. O.D. measurements apply to refrigerator tubing. Available in 1/4" and 3/8" x 20' coils. Mueller Industries dehydrated refrigeration coils are made to ASTM standard B-280. The copper tube is cleaned, nitrogen urged, capped (with standard yellow caps) and shrink-wrapped to an air tight seal. The boxed packaging of the Mueller short cut copper program provides for a clean and organized method of merchandising these items. Due to the fluctuation of the copper market, Do it Best Corp. reserves the right to bill at the prices prevailing on date of shipment. No firm quotes available.