Windex Dinghy will be the perfect choice for dinghies and smaller boats from 3-6 meters (10-20 feet), where you don’t need the reflectors and like to have a quick mount on the side of the mast for easy detachment. The Windex Dinghy has a light, balanced vane with a large fin area and a friction sapphire jewel bearing. These features make the Windex respond quickly and accurately at wind speeds as low as 0.2 knots (0.1 meters/second)SpecificationsVane length: 250mm (10)Height: 270 mm (10,5)Weight: 31 gr (1,2 ounces)It has a stainless clamp that you attach with a self-tapping screw on the side of the maskMast FittingIncluded in the pack