Prima Finnabair Moulds - Skull & Bones £16.99 Quantity: at £16.99 each Add To Basket 0 in your basket View Basket Checkout Stunning detailed design and high quality deep silicone mould. They are perfect for mixed media art, collage and more. Heat resistant and food safe. Size 5"x8" Use a variety of mediums to cast with, paper clay, resin and plaster. Do not mix between moulding food and craft products.