Cable chain, single sided 16x20mm

Here´s a piece for a Cable-chain. The flexibility goes only to one side, max. 45° per link, to protect the cables from breaking.
A second version to bend to both sides is here: http://www.thingiverse.com/thing:722175

NEW!!: A new version of the link is online, now with one side (outer diameter) removable! Therefore, the inner part was enforced a bit...
Haven't tested yet, but I´m pretty confident that it will work.