Semroc Laser Cut Fin Set Plywood Estes Super Big Bertha Upgraded  SEM-FES-9719P

4pcs- 1/8" Light Plywood Center with through the wall tabs and line up holes

8pcs- 1/16" Balsa wood outer skins with line up holes 

1pc- 1/8" Square Balsa Wood strip to use as line up dowel 

Laser cut for precision

A replacement for the Estes Super Big Bertha kit 9719 that includes through the wall fins and special line up tabs for laminating the fins together without shifting of material.