POINT-7 SDM CARBON PRO EXTENSIONLIGHT, STRONG, SMART. A carbon extension needs to offer the right stiffness to match the luff curve of the rig and not just the idea of a lighter product against aluminum. The Point 7 extensions are based on a very simple indestructible system that is quick and simple to use and allows for effortless downhaul. The new pulley and cleat system are attached directly onto the aluminum tubing, with no crossing lines. The pulleys being perfectly in line