Specifications: 1 1/16" diameter at the tip, circ = 3.34"; 1 1/8" diameter at mid-range, circ = 3.53"; 1 3/4" from the main body to pressure point. This item has an insertion length of 4 inches. Use: Place the head into the anus (similar to a butt plug). Make sure that the curled arm (handle) is between the buttocks and the upturned arm touches the perineum. The item itself should be tilted forward. Please note: This particular item is best used by advanced/experienced users who are adapted to products of this nature.