Short kraft cardboard and phenolic cardboard coupler tubes to join rocket body tubes of same diameters, and coupler/bulkhead assemblies to make detachable body sections.
Pack of cardboard couplers to join Estes BT5, BT20 and BT50 body tubes.
Pack of cardboard couplers to join Estes BT55 and BT60 body tubes.
Coupler for T-26 body tubes
Coupler for T-35 body tubes