Set of three generic fiberglass thruster fins, glass-on style, just raw fins ready to be laminated onto a new build. If you're shaping or repairing a board and need a solid, no-frills fin template to glass in, this is exactly that.
This is a classic all-around thruster setup: two matching side fins for drive and hold, plus a slightly smaller center/trailer fin for pivot and control through turns. Nothing exotic — no carbon inserts, no honeycomb core — just woven fiberglass cloth, which gives a flex pattern that's forgiving and predictable rather than stiff and snappy. Good fit for all-around wave conditions, not a specialty tow-in or big-wave template.
Compatibility: Because these are glass-on, they're not compatible with FCS, FCS II, Futures, or any plug/box system — they need to be laminated directly onto a foam blank or existing board during the glassing process.
