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Holes in body of screws for better retention in acrylic
Built-in stops prevent screws from coming apart once maximum expansion has been achieved
4 x 1 /4 turn Mini =0.7 mm
4 x 1 /4 turn Medium =0.8 mm
4 x 1 /4 turn Maxi =0.8 mm
With expansion screw key, standard (straight, small).
Indication: - Mini : for transverse expansion and distalization in the mandible or for especially narrow maxillae - Medium: for transverse expansion and distalization in maxilla and mandible