PK-57 4" V2 Fin Set

The cutouts line up cleanly with the body tube slots, so I didn't have to do much sanding to get a tight fit. The four fins feel sturdy and balanced for the 4-inch diameter build.

Fits the 4-inch V2 kit perfectly, and the edges are already sanded smooth enough that I didn't have to do much prep before gluing. Set them against the body tube and they lined up true with no gaps, so the build felt solid right away. Exactly what I needed to finish the rocket.

The fins are nicely cut and match the 4-inch V2 body tube profile without needing much sanding to fit. Took a bit of work to get them perfectly aligned on the rocket, but once glued they feel solid enough for a mid-power flight.