It is GMK Rainbow. It is GMK color ring.
It is an addon kit to decorate any GMK keysets you have.
Let me present some renders done by Hoq.
Of course, Hoq have done some fine and exquisite details of these renders
Then ,the last one is GMK's renders
OK, there are 116 keys in all including some common add-on.
The GB price is 138 $ dollars including shipment fees.
Where to buy this set ?
you could buy this set at:https://en.zfrontier.com/products/gmk-rainbow
Note:Note: 250 sets only, first come first serve.