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. Blimey! Most epoxies and paints will readily adhere t' this material. Blimey! It has been tested and found compatible with t' followin' paints: lacquer, enamel, ya bilge rat, epoxy and urethane, as well as many different primers. Arrr! T' Quantum Tube can be squeezed, dropped, ya bilge rat, or even thrown and will nay suffer any damage as can sometimes occur t' cardboard or phenolic tube. Aye aye! 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!