So I bought these for my Firestorm Armada fleet but with Adepticon approaching, and me being Knee deep in Destroyers, Heavy D, Tomb Spyders, and Lords on Destroyer platforms, I decided to repurpose them to the task.http://www.rattleheadgames.com/catalog/NJM1100.html
In order to use w/ GW flight stands I had to cut down the clear stand until you were to a uniform thickness (no longer tapering). Assembly is very easy with the three pieces. 2 to the flight stand. Magnetic base and sleeve (shown stacked in the picture), and 1 to the destroyer platform magnetic adaptor.
The destroyer platforms required that I enlarge the hole with a drill. I believe I used 7/16 which created a snug fit. Everything was secured w/ super glue.
The adaptors are fantastic. The teeth hold your skimmer in place w/out rotating. The magnets pull apart easily to show a "downed" necron awaiting WBB or just for travel sake.
I'll try and get some pics up tomorrow. But overall I give the adaptors a huge thumbs up and they are now sported by all 16 Destroyers, 5 Heavy Destroyers, 3 Tomb Spyders and Destroyer Lord.