Introducing the Unifiber HD+ Aluminum SDM Extension.

Designed to withstand heavy use, the HD+ SDM Extension is a high-quality piece of equipment in every racer's kit.

Robust and stable, all parts of the Extension are reinforced to provide safety even in the toughest situations.

The main tube is made of hardened T6 aluminum, while the nylon base is fiber-reinforced. The connection between the two parts is further reinforced by a stainless steel insert.

The base features a 3-roller pulley, which significantly reduces the effort required by the user when trimming larger sails.

The alignment of the roller/clamp system makes rigging easier and is intuitive.