The Severne HD (Heavy Duty) Mast Extension is designed to fit Standard Diameter (SDM) windsurfing masts. This alloy mast extension features triple pulleys for easy downhauling, even on the highest tension race sails.
- Aligned triple pulleys
- Stainless steel hinged collar with locking pins
- 0cm extension setting
- Stainless steel quick-release mechanism on base
- Euro-pin fitting for reliability and compatibility
- Port side cleat