FCS K-3 Performance Glass Tri Fin Set

Specs: Side: -Base: 4.45" 113 mm -Depth: 4.61" 117 mm -Area: 15.11" 9750 mm -Sweep 31.0 Center: -Base: 4.28" 109.0 mm -Depth: 4.41" 112.0 mm -Area: 14.22" 9172 mm -Sweep: 31.0. Fcs k-3 performance glass tri fin set's template was designed in conjunction with kelly slater for down the line walls and long turns. The Glass Flex material mimics the flex properties of traditional glass and is precision molded. Works best for surfers who like the M-5, G-5, or similar sized fins, and anyone who weighs between 130-180 pounds.