Great for things other than auto

I had the opportunity to try & review the Simoniz Platinum Professional Auto Detailing Drill Brush Set for free. It includes 4 brushes. 1-small round brush for small areas, 1-large flat brush with stiffer bristles for deep cleaning, 1-large flat brush for larger areas & 1-dome shaped brush for hard to reach spaces.
As detailing the car in -30 was not an option, I tried them out on my treadmill. The large stiffer bristle brush worked fantastic to clean all the little dimples on the treadmill belt. I just used a little water & a touch of soap and sopped it up with a cloth. I found if I used too much water at high speeds it would just spray dirty water everywhere, so I had to be very careful with my speed and water usage. It took me two rounds to get the belt clean.

I used the dome shaped bristle brush to clean some of the harder to reach areas and corners in the pockets on the display & it worked okay. It lost a few bristles for the first few minutes but after that it seemed fine. It worked more like a duster than really cleaning anything though.

I tried the other two brushes on various parts of the machine but found that they also worked more just like a duster than actually cleaning. Even running the small bristle brush on my hand at full power didn't hurt at all & felt like I was just brushing it gently with a cloth. Trying the large flat one on my indoor carpet/mat had no effect either.

Overall for light dusting jobs, the brushes are ok. 3 of the brushes all have the same bristles, just different shapes, the best one for reaching most areas being the dome shaped brush. They aren't effective for removing any dirt/grime.
For tougher areas, the stiff bristle brush is definitely the way to go, although I question it's ability to handle more dirt build up like on vehicle rims/tires. That being said, I finally have something to clean my treadmill belt properly!