Cardboard Tube Fin Guide

3D printed snap-together fin guide to fit cardboard airframe rockets

Fin holder depth is 5"

Printed in PETG for strength, the color is random

Will fit tubes ±1mm

Total height is 25mm

Measured diameters are as follows:

3"CB - 78.6mm

4"CB - 101.5mm

5.5"CB - 140.5mm