Silicone mold is a must for epoxy resin ,which can be mold for your products,shaping and you can add some materials to it and make your own products. Excellent for jewelry,like pendant,with a hole that allows you to for chain and act as a necklace and you add some decorations to your when making and will make unique for your own,great to use and easy to operate. You can excellent and unique with this mold and epoxy resin materials,for gifts or yourself. and ,reusable and great accessories for enthusiasts. 2 sizes can be optional,,and pieces includes different shapes of .