This is the Mathieu Rectal Speculum, this unique medical item features a 3-prong speculum design.Made from stainless steel it has 3 prongs that measure approximately 3.5 inches and when wide open this devices is approximately 3 inches. Great for viewing!
Once you have it set to the desired opening you can lock the speculum by turning an adjustment screw and leave it in place as long as you desire.
Price $39.95