MXT SDM CARBON EXTENSIONUsed by most sailors on the PWA TOUR, the Mono Button Mast Base and Extension System (MXT) has been designed to offer a secure, heavy duty connection and ease of operation. The MXT Extensions are fully integrated with stainless steel cleat pulley bottom assemblies offering the best weight to stiffness ratio and creating very light but also very strong extensions. The weight has been reduced by eliminating all unnecessary plastic while increasing the