Caster Stopper 4P Set

I bought this because I didn't want to make a dent in the floor carpet with the feet of the washing machine. I've used it for a week now, and there's no dent. It's just as I expected.

My 18-month-old grandson noticed that the kitchen trolley with castors could be moved, and tried to push it around, so I bought this to prevent this. It is very useful because the stopper does not come loose even when pushed by a young child. I remove it when I am not using it, but it does not take up much space when stored away, so I am glad I bought it.