FCS M7 Tri Fin Set Mens 4/3 Wetsuits Looking to turn your favorite

Looking to turn your favorite Thruster set into a Quad

"These are my go to fins when I need to generate speed when the surf isn’t pumping

however these fins are super good in critical overhead waves

The O'Neill boot line reflects the expertly designed features and attention to detail you have to come expect from O’Neill

Hands down the best boot I have ever had

FCS M7 Tri Fin Set Mens 4/3 Wetsuits Looking to turn your favoriteFIN SIZE Large Base: 4. 52" Depth: 4. 67" Area: 15712" Sweep: 31 Foil: Inside OVERVIEW M Series GlassFlex Fast and smooth, with better hold and more squirt through turns. The M series has a flexible tip for forgiveness and control at high speed. The new Inside Foil Technology offers superior drive and hold. GlassFlex offers the flax pattern modeled off a hand foiled fiberglass fin and the ability to mold highly technical computer generated foils