Hegar dilator Set consists of 8 dilators made of stainless steel and comes in a leather case. Each Dilator has a smooth shaft for comfort while creating intense stimulation and pleasure. Made of body safe stainless steel. We recommend a good quality lubricant is used for easy insertion. Rounded tip for easy insertion. Hegar dilators provide the option of double ended dilators in even millimeter increments, or from 3 to 18 for a greater diameter range over the entire set.  Sizes: 3mm/4mm, 5mm/6mm, 7mm/8mm, 9mm/10mm, 11mm/12mm, 12mm/14mm, 15mm/16mm, 17mm/18mm e or approximately .118 inch to .708 inch for a greater diameter range over the entire set.