OBVIOUS CONTRAST, The photographic contrastor allow photos to be taken with a black background.they give contrast to tooth,The scientific design makes the image of the teeth more obvious. DURABLE, it is made of high quality Stainless steel,Can be Autoclave 134,Can be repeatedly disinfected. SAFETY, polished smooth edges do not scratch the mouth. Opaque and Reflection-free,Not deformed. imported materials, can greatly reduce the patient shooting discomfort. A total of 6 models for different oral parts which is include C-2A ,C-2B,C-4A,C-4B,C-4C,C-4D Specification: Color: Black A total of 6 models for different oral parts. Size: C-2A: The length is 15 cm,width is 6cm C-2B: The length is 12.5 cm,width is 5.2cm C-4A: The length is 22.5 cm,width is 6.5cm C-4B: The length is 22.5 cm,width is 6.5cm C-4C: The length is 19.5 cm,width is 6cm C-4D: The length is 19.5 cm,width is 5.5cm Cleanup is also a breeze. Wash the palette using tap water and soap scrubbing with a soft sponge(do not use fibers or metal brushes), sterilization procedure should be done afterwards. Warning:Non-glutaraldehyde immersion disinfection Package Includes: 6 Pcs Dental Contraster Background