Dental Expander Swivel Keys 
Material:
Plastic, Steel
Usage: For Orthodontic Expansion Tools Stainless Screw
Qualities:
1.Safe
2.Effective
3.Constant Force
4.Corrosion-Resistant
Features:
1.Used in lingual side.
2.Fine medical stainless steel, good quality, competitive price.
3.Mainly used in dentistry dentition Orthodontic arch extensions for arch stenosis and posterior cross bite patients.
Notices: If you have any questions, please feel free to contact me, I will do my best to solve it for you.
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FDA STATEMENT
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If so, you can bid on this item only if you are an authorized purchaser.
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