API Lab Base Former Kit is made of high-quality PVC material that is durable and easy to clean. API Lab Base Former Kit is used to make diagnostic casts and it very easily separated from the stone models. The base is slotted for use with disposable articulators and they feature a ribbed bottom to prevent suction to wet counters. INDICATION - Used to make a base for diagnostic casts, Orthodontic, Pedodontic and Prosthodontic Study Models. COMPOSITION - Made of high-quality PVC material. ADVANTAGES - Clean - Designed for storing dental impression tray, keeping them clean and sanitary. Different sizes - 5pcs in different sizes, providing you more choice. Soft- Easy to separate. Perfect for dental lab work. High quality - No chemical smell giving off. Safe for Patient health. Durable enough for long time use.