Dental Mouth Prop Bite Block Retractor Color:Black Purple Grey Material:Silicone Features: ★Durable use ★Environmental Protection. ★135℃ Autoclave ★Quality Guaranteed FDA STATEMENT 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, you can bid on this item only if you are an authorized purchaser. If the item is subject to FDA regulation, I will verify your status as an authorized purchaser of this item before shipping of the item.