BettGolf Golf Club Brush and Groove Cleaner Brush Brushes in 7 For Golf Shoes/Golf Club/Golf/Golf Groove, 2 Ft Retractable Zip-line Aluminum Carabiner (Gray-1)

I bought this to clean the grooves of my irons. It's an intimidating looking brute of a thing but at least it easily flips onto my golf bag.

Bristles have started to bend after 5 rounds