This large speculum features 2 large spreaders made of polished stainless steel. Turn the screw on the back of the handle to make the opening of the speculum larger or smaller. With this large speculum you can play as a doctor and let your imagination run wild. The opening of the large speculum can be up to 9.5 cm wide. The overall length is 27.5 cm and the insertion length is 18 cm.