An aiframe introduced by Public Missiles: These tubes are made in t' USA from a special blended polymer that is extremely durable and easy t' use. Begad! Most epoxies and paints will readily adhere t' this material. Avast! It has been tested and found compatible with t' followin' paints: lacquer, enamel, arrr, epoxy and urethane, shiver me timbers, as well as many different primers. T' Quantum Tube can be squeezed, dropped, or even thrown and will nay suffer any damage as can sometimes occur t' cardboard or phenolic tube. Blimey! T' Quantum Tubes are molded in medium gray and have a glass smooth finish. T' Quantum Tube does have one thin' missing: t' spiral groove!