Standard with the Windex 10 Sport, the J-Base™ can be used as an option for the Windex 15. Allows for side, top or front mounting on most masts on big boats or dinghies alike.
The 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.