Description from Surf n' Show, Noel Salas

Twin Fins "HP Twins"

After testing and reviewing so many twin fin boards, my desire was to design a high-performance twin fin template with good hold, drive, and fast directional changes to maximize progressive twin-fin surfing. The HP Twins have a wide base, generous fin area, depth, and rake to offer good hold and drive through turns. These fins will take you rail to rail faster with exceptional pivot and tighter turns in the pocket without the need for a trailer fin. The refined tip promotes progressive surfing with release at your discretion.

Naked Viking “APEX Series” fins are made with a high strength fiberglass called G10 which is made by compressing layers of fiberglass and epoxy resin. We machine foil each fin to insure the highest performance of any fin available, regardless of the materials used. These are stronger, thinner, lighter and sexier. most similar feel to glass on fins.

For Surfers: (63.5 – 99.79 Kg / 140 - 220 lbs)

• Quick pivot
• Fast directional changes
• Good hold at high speeds
• Increase drive through turns
• Promotes progressive surfing
• Controlled release at will

HP Twins Specs:
Base: 142.2mm
Height: 139.7mm
Area: 24.18 sq in
Rake: 34.1 Degrees
Foil: Flat

I bought these for a board I don't have anymore, and never tried these fins for some reason.