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® 4.7. Replacement parts for Laser®. 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.