Description
Laser cut card stock .04 inches in thickness. When used with through the wall fin construction these light weight centering rings can be used with any D to F powered engine. Rings provided will accommodate single 24 mm and 29 mm engine mount designs and two engine cluster designs for both 24 mm and 29 mm engines.
RocketGuy (verified owner) –
Woohoo! Nice centering rings! Now I can build me some 24mm and 29mm powered rockets using BT-80 tubes!