Definitely not HOLAN (the Polish ones). Pleiades and myself have Holan racks fitted with EXAN single cans. The front lower stay on the Holan has a triangulated tube affair to take the one mount from bike to two points on the hoop to spread the load.

Sandman.

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2011 XT660Z, in BLACK of course!
Mods done:
Lost the will to keep track!