w/ corrugated ends Goodell Uterine Dilator is designed for fixed dilation of the uterus allowing access for other surgical procedures. The dilator features corrugated ends for firm grip of the uterine wall and a screw mechanism to keep the dilator open. The instrument is available in different lengths to accommodate different cases. 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 select. The final specifications will match the description of the specific catalog item you select.