Anterior (Blue) : RED-USHB-A Posterior (Yellow) : RED-USHB-P BiteWing- Horizontal (Red) : RED-USHBH-V BiteWing- Vertical (Red) : RED-USHBV-V Fits any size – designed for sensor sizes 0, 1, 1.5 and 2, no matter the brand DISCLAIMER: The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies. If so, do not bid on or purchase this item unless you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized buyer before shipping.?