Turn your STP into an erect penis with a silicone insert rod. To use, simply slide the silicone Erection Rod inside the funnel of your STP and you are ready to go! The erection rods are hand poured so light imperfections or bubbles may naturally occur in the pouring process.
Each model STP has a unique silicone rod shape for just the right fit. Erection rods are designed for the following STP models: