W639 Summit SUM-003 Roof bars

[M0HAO]

Has anyone installed these bars?

Summit SUM-003

Roof Bars : Universal Aluminium Roof Bars
http://www.mountneyltd.com/2014-08-...roofbars/universal-aluminium-roof-bars-detail
Are 135cm length universal bars, for raised roof rails, as W639.
Are cheap, not needed for any special purpose, just in case a day I need to carry any long object.

Thanks