The VAMO Surfing / SUP 9in fin is a perfect fit for Longboards and Standup Paddleboards either with or without side fins. Fits any US standard fin box and comes with both the brass slider pin and the fin screw and plate. Great for surfing, noseriding, and flat water touring. Ready to put on your board and get in the water. Direct fit for all standard fin boxes of longboards and surfboards with single or tri 2+1 fin setups. And for sups that includes all paddleboards including BIC Stand Up Paddleboards and other popular Paddle Boards found at REI and other outlets. There are some inflatable paddleboards this will not fit on, refer to the photos. This sup fin will get you on the water and stoked out of your mind. This Sup fin is a great paddleboard accessory and would be a great paddleboard gift. Purchase our sup fin and get a free sticker as well as all the free hardware: Tool Free Stainless Fin Screw