The Whitehead gag is a very authentic gag similar to the one used by oral surgeons and dentists to keep the patient's mouth open during examination and surgery.
It has a ratchet system so you can decide how much you want the mouth to open. The height can be adjusted from app. 7 - 2.5 cm.
The gag is easy to use and adjust. Simply press the two metal rods inwards then open the gag to the height you want and release the rods into the right notch.
The gag has two leather straps that fasten around the back of the head with a metal buckle. The straps have six different holes for the buckle, or you can add extra holes yourself.
The holes provided are for a head circumference of 50.5 - 60.5 cm.
The gag is made of metal.