Windsurf Mast Base, Sail Base for 360 Degree Swivel Base For Board Sailboard Accessories Diameter 12.5cm The Windsurf Mast Base and Sail Base is designed to connect the mast to a windsurf board with a 360degree swivel base. This allows full rotation of the sail to accommodate turns, gusts, and tight maneuvers, improving control and responsiveness during windsurfing sessions. The base has a diameter of 12.5 cm, offering a compact, versatile option for various windsurf setups. Key benefits 360degree swivel base enables complete sail rotation for easy alignment during jibes, tacks, and changes in wind direction Supports smooth maneuvering and quicker sail adjustments, contributing to better handling on the water Compact diameter (12.5 cm) and purposebuilt design for windsurfing rigs Integrates with board and sail mounting arrangements to simplify setup and operation Key attributes Functionality: 360degree swivel base for windsurf masttoboard connections Compatibility: Intended for windsurf boards and sail mounting configurations Size: Diameter 12.5 cm Material: Not specified in the product listing Performance: Designed to provide a secure, adjustable connection that facilitates smooth sail rotation Applications and use cases Replacing a worn or damaged mast/sail base on a windsurf board to restore full rotational control Installing on a windsurf board to enable 360degree sail rotation for improved agility in choppy water or during turn transitions Use in onboarding rigs or upgrading existing setups to enhance sail alignment and handling during practice sessions or competitions Note: Material details are not specified in the listing. The description focuses on the base functionality, compatibility with windsurf setups, and the 12.5 cm diameter specification to help you assess fit for your board and rig.