Pratt Rectal SpeculumDDP Elite USA Pratt Rectal Speculum features two blades that form a tapering hollow cylinder. The spring handles allow the instrument to be opened to the desired amount and the screw mechanism locks it in place. The wider external portion allows the operator to examine the lower rectum and anus. Please note that website images are often representative of the product family and may not conform to the exact specifications or features of the item you