API Model Former made of flexible silicone used to make dentulous, partially dentulous and edentulous cast study models. These specially designed tough quality rubber model formers make model making quick and reduce mess. The dental stone or plaster is contained within the mould and when set, the cast can be easily removed with anatomical perfect occlusion. The preformed shape reduces trimming. Model Former are hiigh quality blue silicone material, model former made in 3/8" thick material. Molds are extremely durable and long lasting. It is used in dental laboratory or prosthodontic pre-clinical for making casts of dentulous, partially dentulous and edentulous arches. They are easy to clean and store when not in used. They are reusable.