This is a master mould of a half golf ball,it is made from resin and is designed to reproduce 1000s of casts from silicone rubber.Simply pour or press the silicone into the resin master and let it set. Then remove the mould with your finger tips or a wooden spatula and you have made your first silicone casting to use at your leisure. You can resell them for profit it is endless. You can also cast the silicone mould in resin perfect for using for scrap-booking and journal making. All silicone moulds when made are suitable for use with any of the following materials. Sugarpaste/flowerpaste/modelling paste/marzipan/cold porcelain salt dough/sugar dough/chocolate/fimo. The size of the product when made is 40mm dia.