Orthodontic Fan-Type Expansion Screw 7 mm | Dentaurum Ref.: 606-600-00 Presentation: 1 Piece Material: Stainless steel with wide expansion screw holder plate sections are opened fanwise With expansion screw key straight, small – standard. Indication: for maxillary anterior or posterior expansion Directional arrow                  Printed, Blue-Yellow Maximum Expansion              7.0 mm /segment 4 x 1/4 turn                           = 0.8 mm /segment                                If you have any queries, please contact us via Ebay. We usually respond within 24 hours on weekdays.

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