Save time rigging and get more time on the water with the Duotone Power.XT 2.0 SDM extension. This extension fits with SDM (standard diameter windsurfing masts) and with euro-pin mast feet. he Power.XT 2.0 features the innovative Integrated.Ratchet.System which makes down hauling and fine tuning your sail, even out on the water, a breeze and not to mention fast! It also features North's Rapid.Release for simplified de-rigging and original Lyros Dyneema rope for higher strength and durability. If you want rigging your windsurf sail to be quick and easy, without having to strain to downhaul your sail, this is the extension you need. To top it off, this extension comes with a 2-Year Unconditional Warranty!