I think I found the biggest brushes I have ever seen in a hardware store. They are called ceiling brushes. They are so huge that first I thought it was impossible to squeeze them into my pussy. But after some stretching I was able to shove them in. Since I was in the balcony and it is quarantine time, I had to hold all of my screams back because all the the neighbours being at home.
Rotating any kind of brushes inside the vagina is horribly painful especially when the rotation is power-driven. Like in this session where we used a modified drill to spin different kind of brushes inside my vagina. My pussy got swollen and sensitive for two days but I kind of enjoyed it.