Looking at the mounting method and fittings I had a real case od deja vu. It wasn't until I rediscoivered this thread
OCZ Vendetta 2 Exposed Heatpipe Base Heatsink Review that I realised , if you look at the bottom picture in that link you will see the fittings etc., are identical , right down to the sachet of thermal paste. Even the heatsink base is the same. I think this is definitely a case of the same manufacturer

The Heatsink:-
Mounted Weight including Fan = 600Gms.

Mounting Feet & screws , push pins removed, by pulling & twisting.

Securing Mounting Legs:-
Easy screw each ppair of legs to block, using provided bolts.
My biggest gripe at this cooler are the inclusion of the dreaded push pins, of stock cooler fame. Whilst they do enable quick insertion without having to remove the motherboard from the case, I find that their life is pretty short & they fail after 2 or 3 mountings and removal. Given that this heatsink is 600g I much prefer to use a bolt thru kit.
I'm using the Thermalright 775 Bolt Thru Kit, these are pretty cheap around £4~5.
There is a
Xigmatek Crossbow I7751 but am still waiting a reply ffrom Xigmatek DE about their availability. I have seen that they are been given away
poohball Tech Power Up
In a way though I quiet like the option that Xigmatek give. This is a relatively low cost cooler, the base kit give the option of a quick mounting with push pins. If you are an enthusiast and want better mounting a bolt thru kit, at a relatively low £, is an option, sorted