GreyMedical® Introduce Davis mouth gag ring blade 7 1/2” (19.05 cm) utilized in conjunction with a frame to maintain the mouth open and depress the tongue during surgery. The blades are available in different sizes, and can be used interchangeably with the Davis-Boyle complete set, with frames right and left. They are intended to depress the tongue and come in five sizes to suit patie... https://grey-medical.com/product/davis-mouth-gag-ring-blade.html