FCS M7 Tri Fin Set Mens 4/3 Wetsuits Flat pad - no arch

Flat pad - no arch bar

The F4 is one of the most balanced fin templates with a thicker tip that provides additional hold on rail

however these fins are super good in critical overhead waves

Looking to turn your favorite Thruster set into a Quad

Kicktail: 25mm knuckle

FCS M7 Tri Fin Set Mens 4/3 Wetsuits Flat pad - no archFIN 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