Mr. Steel OpenFlow Hollow Urethral Plug with Glans Ring – Stainless Steel

A hollow, flow-through steel plug that gives you calm control and intense sensation – safely and at your own pace

Imagine a moment where every millimeter feels controlled and smooth.

Mr. Steel – OpenFlow Hollow Penis Plug with Ring (hollow urethral plug) is a stainless steel, flow-through probe for the urethra – made for you who want a deeper, more precise and hygienic sensation.

The device features a sliding ring for easy control and safe removal, three diameters (8/9/10 mm) and a mirror-like finish that glides smoothly with sterile, water-based lubricant. We deliver discreetly and quickly – and if you feel like it right away, the same price in store too.

Why choose this product?

This hollow penis plug is designed to flow with you: the open channel lets fluids flow through, the steel holds its shape, and the smooth profile makes for a smooth progression. For a beginner, 8 mm may be a good first touch; 9–10 mm will reward the more experienced. It’s easy to use as long as you take your time, listen to your sensations, and always use sterile water-based lubricant.

Features → benefits

• Hollow, flow-through design → you can urinate during use; cleaning is smooth and hygienic.
  
  
• Stainless steel, mirror finish → non-porous and easy to clean; the surface feels soft and glides smoothly.
  
  
• Three diameters: 8 / 9 / 10 mm → a fit for everyone; you can progress from one size to the next in moderation.
  
  
• The glans ring → keeps the plug in place and makes it easier to remove when you decide.
  
  
• Size selection support → 8 mm is often a good first step; 9–10 mm offers a fuller stretch for the experienced.
  
  
• Storage bag included → keeps your equipment protected and clean, even when traveling.

A little reminder if you're already made up your mind: add to cart, choose a size and continue at your leisure - you'll receive it at the pick-up point the next business day.

A moment of storytelling – this is how it helps

Many describe the sensation of urethral sounding as “innerly clear”: a calm pressure that builds to a pulse. As you move slowly, your breathing evens out and your body responds. The warmer flow through the hollow structure brings its own, entirely new signal—like a steady hum that deepens everything else. That’s what this plug is for: a curated, safe route for those who want to feel more, without rushing.

Size selection – made easy

• 8 mm (~2.51 cm circumference): often a good initial stimulation when you are looking for a calm progression.
• 9 mm (~2.83 cm circumference): clearly fuller, while 8 mm already feels natural.
• 10 mm (~3.14 cm circumference): more intense stretch for the more experienced.

Tip: listen to your body, use plenty of sterile water-based lubricant , and proceed without forcing yourself.

Customer experiences (Hot Lips test group)

• “A peaceful first experience that became a routine” – Jari, 8 mm
  “It was a little scary, but once I boiled the tool, applied sterile gel, and proceeded at the pace of my breathing, the sensation was surprisingly gentle. The hollow canal felt exotic—and I found that cleaning was really easy.”
  
  
• “9 mm brought just the needed fill” – Mikael, 9 mm
  “I use the tire as a light grip to keep my grip. The coolness of the steel turns to heat in a couple of seconds, and then that steady pressure… works.”
  
  
• “10 mm is my 'Sunday plug'” – Antti, 10 mm
  “When you have a moment to yourself, the 10mm is perfect. The open end gives it a 'clean' feel. Easy to maintain, ready in the bag for next time.”

Use, cleaning and safety

Use

1. Wash your hands and the equipment. Calm down for a moment.
2. Use a sterile, water-based lubricant . Also add the substance inside the opening.
3. Proceed one millimeter at a time. If you feel pain, stinging, or resistance, stop.
4. The ring makes it easier to grip and remove safely.

Cleaning & sterilization

• Rinse immediately after use with warm water.
• Disinfect with a metal-safe agent or boil for 3–5 minutes. Dry thoroughly.
• Store in the included cloth bag, separate from other equipment. Do not share with others.

Safety

• Use only when clean and intact. Avoid use during urinary tract symptoms.
• Steel is non-porous and durable, but if you have severe metal hypersensitivity, consider another material.
• Always use sterile, water-based lubricant; avoid oils and impure gel.

Specifications

Delivery, warranty and ease of purchase

• Delivery : discreetly and quickly – usually the next business day to a pickup point or parcel machine.
• Warranty : 2 years.
• Buy now – pay later : invoice/installment payment available at checkout.
• Returns : 365 days for unopened products.
• Store : available for immediate delivery, same price online and in store .

Frequently asked questions

What level is this suitable for?

8 mm may be suitable for a cautious first attempt. 9–10 mm is more often for more experienced users. Listen to your body and proceed with caution.

Can I urinate during use?

Yes. The hollow structure allows liquids to pass through, making it comfortable to use and easier to clean.

What lubricant do you recommend?

Sterile, water-based gel. Convenient alternative: EasyGlide Fragrance-free .

How do I clean safely?

Rinse immediately after use. Disinfect with a metal-safe product or boil for 3–5 minutes. Dry and store in a clean bag.

Does this hurt?

It shouldn't hurt. The sensation is like pressure and stretching. If you feel any pain or stinging, stop immediately.

Can I share the device with my partner?

Not recommended. For hygiene and safety reasons, keep the device personal.

A light reminder

When you order now, your device will arrive tomorrow. Choose your size, add to cart and let your body do the rest.

A strong call to action at the end

Order Mr. Steel – OpenFlow Hollow Penis Plug with Ring and take your inner sensations to the next level – safely, controlled and stylishly. Fast, discreet delivery, 2-year warranty and the option to pay later. When you want to feel more, this is a sure choice.