This Mast Deviator helps avoid damage to the nose of windsurfing boards by deflecting or "deviating" the mast away from the nose during a crash or catapult. The Deviator is a lightweight base accessory which fits into the mast track of modern windsurfing boards. The base then attaches to the top of the Deviator. This Mast Deviator only weighs 170 grams or 6 ounces. The Deviator is proven to reduce costly board repairs. All of our bases are compatible with this Mast Deviator.