DORSAL Hexcore 4-Fin Quad Set is a four-fin quad set with Futures-compatible bases. Construction: Fiberglass with Honeycomb Hexcore. Fit and setup These fins fit Futures fin boxes. Confirm your board's fin-box system before ordering. Product details Size: Medium. Colors: Green, Black, White, Blue, Orange, Red, Yellow. Material: Fiberglass with Honeycomb Hexcore. Set includes two front fins and two rear fins for a quad configuration. Fin specifications Front fins Base: 4.41 in. Depth: 4.74" Area: 15.26 sq. in. Sweep: 32.9 degrees Foil: 80/20 Rear fins Base: 4.10" Depth: 4.00" Area: 12.64 sq. in. Sweep: 32.4 degrees Foil: 80/20