Combined use of articulating film, foil and paper to mark high and low occlusion points provides the most accurate way to mark every point of articulation. Proprietary manufacturing process combined with stringent quality control guarantees a clear, positive marking without smudging of wet or dry fields. Color-coded packaging and product descriptions make identification easy. Not made with natural rubber latex. 0.0028". Box of 12 Books 12 Sheets per Book Total of 144 Sheets