Hegar Uterine Dilator, single-ended, 18.5 cm (7 1/4") with a 3.5 mm diameter, is a standard reusable gynecological instrument, with multiple manufacturers and suppliers confirming this exact specification.

This single-ended variant is a solid, slightly curved, probe-style instrument designed to measure the level of cervical dilation or to progressively dilate the cervix for procedures like D&C. The smooth, rounded tip is designed to minimize tissue trauma.