For that one person in your party who might as well be using this anyway. You know the one.

Full list in this set: D20 D20 - Large Dice Set Dice Set - Large

All "standard size" dice are scaled to match a 22mm D20 (measured from opposite corners), and all "large" dice are likewise scaled to a 30mm D20.

See also: All Twenties D20 One Twenty D20 One One D20 Coinflip D20