Totem Arro Plinth

Does anyone know the size of the thread on the spikes hat insert into the plinth on the Totem Arros..

If I remember correctly, they are 1/4" threads. But I'm not too sure. You should contact Totem directly via their website "". I have a pair of Sttaf's and I actually removed the plinths (the same ones are on the Arro's I think) from mine and replaced them with a set of the Totem Claws. It made a huge difference in the overall sound of my Sttaf's. You might consider doing the same with your Arro's too. Good luck