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.