WindTrak 15 J-Base™ Allows for side, top, or front mounting on most masts, on big boats or dinghies alike. J-Base is made of glass filled polycarbonate, 2" (5 cm) long. Includes stainless steel set screw and (2) #10 self-tapping screws. Reduces overall weight by 15 grams when substituted for standard mounting base on Windex 15.
-created by boaters for boaters-