Drive: Mid drive rating; Pivot: Long arc rating; Hold: Mid hold rating; Base: 4.37''; Depth: 4.37''; Area: 13.71''; Sweep: 35.5; Foil: Flat; Optimum rider weight range: 121lbs - 154lbs; Al Merrick and FCS collaboration. This is a great all round, versatile fin, which is commonly used by the Al Merrick team. Ideal for performance thruster surfboards. :: Unisex > Surf Accessories Size: one size.