Estes Accessories Fin Alignment Guide 2231
FAST & ACCURATE fin alignment for three or four finned rockets.
A great tool from days gone by. No more guessing where your wood fins go, this guide does it all for you. Easy to follow instructions are included. No more door frames needed to draw that straight line for fin placement. Works with 3/32" (2 mm) or 1/8" (3 mm) wood. (Body tubes and wood not included.)