unifiber hd aluminium sdm extension freestyle The name comes from the

The name comes from the large front and back "Comp" panel

Precision:±3% FS

incredibly stable

They'll give you the most controlled flight you've ever experienced

unifiber hd aluminium sdm extension freestyle The name comes from theIntroducing 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.