Bought these to replace the plastic brushes I used in the past.
I like that there are 2 different heads for these (darker bristles are firmer), and bought 2 boxes so that I would have 2 handles and could use either as needed without having to change heads while washing up. I use both depending on the item washed, and they are effective.
I do wish you could buy the handles separately though. I had to buy 2 boxes to get the second handle (when I didn't need 6 heads at this point), and additionally next time I do need new heads I would expect the handles to still be going strong? Hopefully Ocean Saver will have added new options by then else I'll end up buying heads elsewhere to avoid waste, which would be a shame.