Feature- Contrastors allow photos to be taken with a black background.- Special black background board, multi-angle shooting,can accurately adjust the camera white balance.- Very comfortable for the patient, they give contrast to your images and eliminate those elements not required in the picture.- They can be cleaned and decontaminated by any process and they are fully autoclavable.- 4 types of the oral photo background board, meeting different need.SpecificationProduct Name: Photo Contrast Background BoardColor: BlackModel Number: C-4A/C-4B/C-4C/C-4DQuantity: 4pcsSize: (approx)C-4A: The length is 22.6 cm,width is 7cmC-4B: The length is 22.6 cm,width is 6cmC-4C: The length is 19.5 cm,width is 6cmC-4D: The length is 19.5 cm,width is 5cmPackage Content1 x Dental Photo Background Board ASIN B094XYNMTY Brand Name TopHomer