Meet the 5.5" Keel Fin Findestructable Safety Flex Fin with Toolless Screw—a performance fin built for serious paddlers who want speed, stability, and peace of mind.

Findestructable Tech uses a proprietary polymer that stays rigid in water for top efficiency yet flexes when out of the water to protect your fin box. Yes, it’s tough enough to take a hit so your board doesn’t have to.

Key Features & Design

• Findestructable Tech: Proprietary polymer that remains rigid in water for peak performance and flexes out of the water to keep the fin box from breaking.
• Keel Fin Shape: The fastest fin shape for flat water paddling. Low-profile 5.5" height with a 45° rake reduces leading-edge drag during SUP touring or paddleboard racing. The long base line delivers massive side-to-side stability, boosting board stability by up to 30% when replacing a traditional dolphin nose fin.
• Specs: Depth 5.5", Base 6", Rake 45°.
• Compatibility: Works on any SUP or surfboard with a standard 8.5" or 10.5" fin box.
• Incompatibilities: Some Inflatable SUPs such as the Bali Solstice, AquaMarine SPK2.
• Fast & Easy Install: Free "No Tool" Fin Screw included so you can install this on your board right away without any tools.
• Upgrade Your Ride: Upgrade your board with a fin that blends speed, stability, and peace of mind—no drama, just better days on flat water.