I am now offering these tubes in 15" lengths to avoid the new USPS surcharge for packages over 22". They can be easily cut in half to make two 1 LB rockets with no waste.
These tubes were manufactured specifically to match NEPT tubes when they went out of business. The ID is sized so you will still be able to use tooling made by Wolter, SLD and others.
Unlike other tubes, these are precisely the same dimensions from batch to batch. If you ordered a batch of these in 2014, rest assured these will still fit your tooling perfectly.
"I don't really see any point in going much further, unless somebody wants to see if a rocket made with these tubes will fly after being run over by a truck.... Rockets are again within the grasp of newbie pyros with limited funds." SLD