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Controlled Progression in Stainless Steel

HMO Urethral Sounds & Dilators are designed around diameter, progression, profile, and control.

The collection ranges from traditional smooth Hegar sounds with clearly defined paired diameters to specialty vibrating designs that introduce graduated steps or a repeating beaded profile.

Whether you are beginning with smaller sizes or moving into more advanced diameters, the important principle is the same: progress gradually and stay within a size you can use comfortably and without resistance.

Choose Your Sound

🧪 Hegar Urethral Sounds & Training Sets

The most systematic choice for diameter progression.

Our double-ended Hegar sounds provide two neighboring diameters in each tool, allowing you to move through sizes in small, clearly defined increments.

The range begins with a four-piece starter set:

• 3 / 4mm
• 5 / 6mm
• 7 / 8mm
• 9 / 10mm

More experienced users can continue with individual advanced sounds from 11 / 12mm through 17 / 18mm, or choose the complete eight-piece set covering the full 3–18mm range.

Each sound is approximately 8 inches long, gently curved, polished, and permanently marked with its diameter.

Best suited for: gradual training, clearly measured progression, and users who want a traditional smooth sound.

⚡ Stepper Vibrating Urethral Sound

Three diameters in one graduated profile.

The Stepper uses three defined stages — 4mm, 6mm, and 8mm — along its insertable section.

Rather than changing from one separate sound to another, the increasing diameter is built into a single design. Built-in vibration adds another dimension to the experience.

Best suited for: users who prefer noticeable graduated stages within one compact sound.

⚡ Beaded Vibrating Urethral Sound

A repeating profile rather than a continuous taper.

The Beaded Sound uses a series of rounded 7mm beads separated by narrower 5mm grooves, creating repeated changes in profile along the insertable section.

It also incorporates built-in single-speed vibration.

Best suited for: experienced users looking for a more pronounced textured profile rather than simple diameter progression.

🧭 Quick Comparison

📏 Progression Is the Point

With sounds and dilators, moving up in size should be deliberate rather than rushed.

A difference of only one or two millimeters can be significant. The Hegar system makes those steps particularly easy to understand because each sound has defined neighboring diameters.

There is no reason to move to the next size until the current diameter can be used comfortably and without force.

For shorter, more compact urethral designs rather than longer sounds, explore our Penis Plugs collection.

🧼 Use & Care

• Use plenty of sterile, body-safe lubricant
• Clean and sanitize the sound thoroughly before and after use
• Insert slowly and under complete control
• Never force the sound against resistance
• Increase diameter and depth gradually
• Stop with sharp pain, bleeding, or unusual discomfort

For vibrating sounds, remove the battery before cleaning and storage. Do not immerse the battery compartment unless the product is specifically rated for immersion.

🔗 Recommended Lubricant

For urethral use, we recommend
McKesson Sterile Lubricating Jelly
— sterile, water-based, oil-free, and easy to apply precisely.

🧠 Choose Progression or Profile

The Hegars are about measured progression.

The Stepper is about graduated stages.

The Beaded Sound is about repeating changes in profile.

Choose the design that matches the kind of control and progression you want — then let the product specifications determine the appropriate size.