This is the Fin Alignment Guide from Estes.
Suitable for Ages 10 & Older with Adult Supervision for Those Under 12.
FEATURES: Fast & accurate fin alignment for three or four finned rockets
No more guessing where your balsa fins go, this guide does it
all for you
Works with 3/32" (2mm) or 1/8" (3mm) balsa
Easy to follow instructions are included
INCLUDES: One Fin Alignment Guide
REQUIRES: Assembly
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