Basic SDM mast from Unifiber has been designed for simple freeride sails. Recommended only for light weight riders. Made in 30% high quality pre-preg carbon, which gives high quality and durability at low price. Sail works stable and gives direct response on this mast, which is appreciated by beginners and intermediate riders. Very good choice for beginners who want to have solid, durable and light mast in low price at once. Features Constant Curve construction.