Hi there. No fast service here ....
I only have the old bases, which still are legal. They are 20 mm x 20 mm. They can be used for every infatryunit, bikes, attack bikes, dreads, support weapon, cavelry, and skimmers who need a base like land speeders.
When it comes to the "new" bases, see the main rules 1.1.2; the size of the stand and number of models glued to it are left pretty much for the player to decide within the following lilitations:
- a stand may be no more than 40 mm and no less than 5 mm across in any direction.
- a stand must be at least 20 mm across in one direction.
So you can have bases which are 40 mm x 20 mm, 20 mm x 20 mm, 40 mm x 10 mm etc. You can have 1 or as many models on it as you want.
Titans which use a base (not all of them) have larger bases. The base was a circle of 60 mm for the larger titans, like warlords and reavers, but square 40 mm x 45 mm for smaller like warhounds.
Good luck
