I got these after concluding that the Mooer candy toppers were too tight for my Walrus Slötva. I could squeeze these on, but the rubber washer inside pushed the topper off the footswitch after a few presses.
After the initial disappointment, I found that the washer can be removed by fully unscrewing the tighteners. Hence, after replacing the washer by some cardboard I could fit the toppers onto the Slötva and some other pedals with wider footswitches, including even TC Electronic's Mash footswitches.
Happy customer after all.
BTW, I ordered two bags, each of which inluded 1 red, 1 golden, 1 silver and 1 blue topper.