Davis Windex Light 12 Volt 3200, Windex 15” Wind Vane 3150 with Tacking Tabs Sailing Bundle (2 Items). Light is waterproof w/ non-corroding silver parts. Fits under Windex 15, Windex 10 or J-Base™ mounting socket. Windex 15 Wind Vane offers exceptional performance w/ sapphire jewel suspension bearing, large vane & adjustable tacking tab system. For cruising & racing boats 15 feet and larger.