Features:<br />Compatible with sterilization and the autoclave (&lt;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