Way better than I expected, and I was expecting them to be pretty nice! The red pops in my gym and being able to stick them to the rail makes them easy to find and grab. Easily slides on and locks with a quick twist. Coop mentioned in his review that you need two hands to keep the barbell from spinning when you twist, but with iron plates they grab the plate so one hand is all you need.
Really helps make workouts flow a little easier. Highly recommend.