<!--ProdInc[300296323]/Mall:[backcountry_US]-->The Wakesurf Quad Fin Set locks into Lib Tech FOCII fin boxes to provide tracking, control, and power behind the boat. These durable fins can be set up as a quad or tri-fin depending on our preference for the day. <h3>Details</h3> Wake surf fins designed to customize your ride Large lead fins offer tracking and control Small rear fins allow you to break free Compatible with Lib Tech FOCII fin boxes Item #LBTV19J <h3>Tech Specs</h3> Compatibility : Lib Tech FOCII fin boxes Base Length : [lead fins] 4in, [trailing fins] 3.81in Depth : [lead fins] 4.25in, [trailing fins] 1.62in Foil : double Activity : wakeboarding Manufacturer Warranty : 1 year