Phoenix PWA SlalomOptimum sizing: 28 38cm Fin Bases are: tuttle or power box in all sizes, deep tuttle box available from 42 58cm All boxes have 6mm threads. thread available upon custom request Custom sizes available in 1cm increments on request Super fast and rock solid stable with Power and Grip. Great Control with level trim even in the gnarliest conditions. Our NO compromise Slalom Race fin for handling powered up, petal to the metal, race conditions. Yet, easy

Thanks man

All boxes have 6mm threads

but I love a fin that helps keep the board down and trimmed when wound up

designed for shallow water speed sailing

Utilizing a new specific wing profile to enhance upwind performance and downwind record breaking speeds

Super positive grip without putting the nose of my board down

Power and Grip

Set of 4 "Beastie" B4 quad fins

After sailing with it the rest of the day I was so impressed that I immediately ordered several for myself

I will not be going back to the Wave Wizard

testing on their best selling Fanatic STB Free-Wave boards

0 m Matrix sail