the Oxballs Woof silicone plugable hole. Its basically a tunnel plug with a twist.This toy is for puppy play. It comes in 2 pieces. The hollow plug (black) has a veiny knot. You lube the plug and push it up your puppy hole until the thick knot is inside. This replicated a dogs penis and his knot. This ensurers your plug will stay in place. This puppy’s not too thick, but goes in deep and stays in place its got balls and an upturned tail.The second part is the red plunger/dildo. You use this to put in the tunnel plug so it makes it easier to insert. However it other applications. You can remove the plunger and then fuck. You can leave it in and fuck your partner with the plunger or you can use it like a regular dildo.When the 2 pieces are together it is designed to look like a erect dogs penis including the red tip. all made from pure Platinum Cure Silicone, the best stuff so it feels good and cleans up easily.