Urethral Plug With Glans Ring specifications:

Measurements: Ring has a 1.3 inch, or 32mm diameter. Plug inserts 0.8 inches, or 20mm. Ball diameter is 0.3 inches or 8mm.
Material: Stainless steel.
Trap your cock head in ruthless stainless steel!
Experience targeted on your glans and at the tip of your dick with a unique tool that you can wear while you jack off, fool around with your partner, or even as you go about your day! Slip the tight ring down to your frenulum, inserting the optional urethral insert or pivoting it back. The unrelenting metal squeezing your shaft in just the right place will make your cock surge with pleasure. Treat your cock to the amped up stimulation it's been craving! Made of stainless steel, this non-porous and phthalate-free device is easy to clean and sterilize with mild soap and water.

NOTE:
1. Clean by medical alcohol or wash with warm soapy water before and after use
2. Only for personal or lover use.