In the middle of every strip, there is saw for opening. Material: Stainless steel with diamond Sand. Single or double side with diamond ,without hole. The sale of this item may be subject to regulation by the U.S. Food and Drug Administration and state and local regulatory agencies.
Item Tag: Single Side
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Dental Orthodontic Finishing Strips Metal Sand IPR Fine Diamond Polishing Strips
Yellow-Extra fine(15μm). Width: 2.5/3.75/6.0/8.0mm. Length: 148mm. Single Side,no hole,w saw.
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Dental Orthodontic Diamond Polishing Finishing Strips Steel Metal Sand IPR Fine
But you do need to carefully confirm your needs!