Completely versatile, the Strap-On Power Cock was designed to be a strap-on harness that could work well for either males or females. Fully hollow on the inside to fit a penis yet firm enough to stand alone, this harness is fully adjustable for a comfortable fit. To amplify your pleasure, this toy comes equipped with multiple speeds of vibrations that are controlled by the included remote. The Strap-on Power Cock requires 2 AA batteries for operation (not included). Width of shaft ranges from 1.50" at the head to 1.80" at the base. Length: 7.00 Inches; Insertable Length: 6.00 Inches; Width: 1.50 Inches.