Magnum PK-84 Fin Set

These dropped right onto my 54mm motor tube with almost no sanding needed, which was a nice surprise for a scratch build. All three fins matched each other well, no warping in the stack. Should hold up fine on the bigger motors.

The 1/4 inch thickness gives these fins a solid, sturdy feel that made assembly confidence-inspiring. They mate cleanly with the 54mm tube and the trio is perfectly matched for the build.

Fins slid right onto the 54mm motor tube without any sanding or fuss, which saved me a whole evening of prep work. The 1/4 inch thickness feels sturdy enough that I'm not worried about them snapping off on a hard landing.