Hegar Uterine Dilator, single-ended, 18.5 cm (7 1/4") with a 7.5 mm diameter is a confirmed, standard reusable gynecological instrument. Unlike the double-ended Hegar dilators, this instrument has only one working end of a specific diameter. The smooth, blunt, and slightly curved tip is designed for safe, comfortable insertion, minimizing the risk of tissue trauma or perforation. The 7.5 mm size is used to measure the level of cervical dilation or to progressively dilate the cervix to a specific width, allowing the passage of other surgical instruments.