This is a set of hangers to use if your base is 10mm thick compressed foam board (Wedi, Marmox, Kerdi etc). The tee nuts go into the front of your baseboard and then on the back to use the bolt through a D-ring and washer. This allows you to put hanging wire or string through the D-rings. The tee nuts, once correctly tightened, should be flush with the surface of your front side. You can then set your mosaic over the top.
Number 7 spanner (7mm) needed to tighten the nuts that go in from the back.
Each set has;
2 x tee nuts
2 x washers
2 x D-rings
2 x nuts, 7mm head.
Whilst all care is taken to supply these goods for correct use you are advised to make your own assesment of the loading weight of your mosaic.