This is an optional Estes Fin Alignment Guide, designed for fast and accurate fin alignment for three or four finned rockets.
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.)
This product was added to our catalog on April 7, 2014