Master Series Invasion Silicone Urethral Sound Trainer Set

This three-piece set by Master Series contains three flexible, silicone Hegar urethral sounds. Each sound is eight inches long, with a gentle "S" curvature and smooth, rounded tips. The sounds are double ended, each side a different diameter with a smooth transition between sizes at the midway point of the rod.

Specifications: 
Overall Length: 8"
Diameter:
- Small: 5mm - 6mm/15Fr - 18Fr
- Medium: 7mm - 8mm/21Fr - 24Fr
- Large: 9mm - 10mm/26Fr - 29Fr
Material: Silicone
Compatible Lubricants: Water-based lubricants