Mystery Resin Set with Metal D20. Showcase your passion for RPGs and Board Games with these stylish Resin & Acrylic Dice Sets. Featuring fantastic designs inspired by the friends and foes from your favourite RPG games, these dice are great for your next encounter.. FEATURES. Our classic RPG style Resin & Acrylic Dice Set. Standard 16mm Polyhedral. Traditional 7-piece RPG dice set – D4, D6, D8, D10, D12, D20 and Percentile Dice + Metal D20. Made with care and attention