Check the listing for details. 4 Box Dental Matrix Bands Non-Stick Composite Matrices Green PTFT Teflon Coating. Condition: New. Listed at 66.49 USD. Feature : Matte surface reduces reflection Teflon Coating, Non-Stick Safe Hole Protrusions Model： 3.5mm/4.5mm/5.5mm/6.5mm Thickness:0.038mm Wrap it up – Full curve bands wrap further around the tooth – out of your way – and have optimum anatomy built right in. Deep or wide – Improved subgingival areas and increased width mean you’re ready to tackle the toughest deep restoration or extra-wide prep. Non-stick – Contisen invented it and nothing prevents bonding agent and composite adhesion better! Package : 50 Pcs/Box , total 4 box 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, do not bid on this item unless 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.