Windesign supplies replacement spars for Laser. These spars make the perfect budget solution with the Windesign school / training sails. These spars are not allowed for use in official Class Association events. Bottom mast for Laser® Radial. Replacement part for Laser®. The Radial lower section is the middle size of the three lower mast sections available for the Laser and is designed for the Radial size sail. Not allowed for use in official Class Association events. Laser ® is a registered trademark of Velum Limited an Performance Sailcraft Australia Ltd.This product is compatible with Laser ® but is not an original Laser ® product.