Features:<br />Compatible with sterilization and the autoclave (<130⊂C)<br />Can be as Cheek Retractor/mouth opener/ Lip Retractors/ Cheek Expanders<br />Health and safety materials、 elasticity、 consistent with mouth、 very practical.<br />Smooth surface is more comfortable.<br /><br />Specification:<br />Shape: C-shape<br />Material:Polyvinyl chloride<br />Color:transparent、 blue<br />Model: large、 medium and small<br />Large: 130 * 92 * 21mm<br />Medium: 118 * 85 * 17mm<br />Small: 97 * 70 * 15mm<br /><br />Instructions:<br />Stretched in the vertical direction of the patient's mouth for the treatment of front teeth area、 orthodontic treatment to adjust the effect is very good.<br /><br />Package Includes:<br />5 x Cheek Retractors