Not familiar with that brand of 40mm mops and brushs. I have a bunch I bought from Brownells a year and a half ago that are double ended. Here is an old pic I took of one sticking out of an inch and a half bore gas gun on mine.

I check the fit in my golfball mortar last week and it fit OK. I will just have modify one end to work better. In the upper right corner you can see the nylon and bronze brushes.