They're dice. They roll. They look cool.
I have not used it as it is for my grandson for Christmas but I know he will be thrilled with it as he plays Dungeons and Dragons games.
Very slightly larger than my other dice (like a matter of mm) which I love. Numbers are easy to read too. This is an all around great set.
I love these, they are a great looking set of dice and haven’t let me down yet! Haven’t rolled below a 15 in 2 sessions