FS-60 Caliber

The fin tabs lined right up with my 54mm motor tube, no trimming needed. Nice thick 1/8" stock too, way stiffer than the flimsy ones I've used before. Four in the pack was exactly what I needed.

Snapped right onto my 54mm motor mount with barely any sanding, and the fin tabs actually line up where they're supposed to. Four fins in the pack is a nice bonus since I always seem to break one.

These were my first fiberglass fins and the 1/8" thickness feels rock solid compared to the plywood ones I used before. Four fins in the pack gave me a spare, which was nice since I scuffed one up sanding the edges. Dry fitting them on my 3" build, the tabs sat right against the 54mm mount with bare