No. 10 Hook Anchor PlugWith the BUTTR Anchor Plug you can be sure that you fully enjoy yourself. This particular model has two arms that spread as soon as the plug is inserted. The advantage of this is that you do not have to insert the full diameter immediately. By squeezing the arms together, the plug immediately becomes narrower and the number of centimeters to be inserted is considerably less. Once the butt plug is through the sphincter, the plug spreads for an extra filled feeling.