Tendril Thruster Fuck Machine Sex Machine by Doc Johnson Anal Pull Beads Feature Wavy Urethral Penis Plug NEW 11048 PURPLE Feature Wavy Urethral Penis Plug Standard Smooth Steel Plug Silicone Urethral Catheter Stimulation intensity High—wavy texture creates intense nerve response Moderate—smooth surface provides basic sensation Low to moderate—softer material reduces intensity Material durability Permanent—medical grade steel withstands repeated use Permanent—durable but lacks textured design Limited—silicone degrades over time with heat sterilization Customization Yes—two interchangeable glans rings included No—fixed design only No—single piece construction Best for Advanced users seeking intense Its unique finger like shape mimics natural touch while providing mechanical consistency impossible with human fingers Strong suction cup base: Locks securely to flat surfaces plus button controls on machine body for direct manipulation and speed or vibration adjustments