38mm G12 coupler
38mm G12 Fiberglass coupler 4in long(email if you need a custom length)
Fits both Thick and Thin wall tubing as the ID is the same for both
Premium fiberglass rocket airframe tubing. This tubing is manufactured using a state of the art filament winder. Wind angle is between 30 and 45 degrees to achieve the highest linear strength for rocket airframe and motor mount applications