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.
Warranty for 1 year from manufacturer defects
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Super Big Bertha "Bruiser" Fins
Great improvement on stock balsa multi-layer fins that are packed with the SBB. They built perfectly and should be pressed while drying if yellow AP or white glue is used for assembly.
