E-Stim Systems - UltraSound Dipstick - Electrosex Dilator

The E-Stim Systems UltraSound Dipstick combines the sleek simplicity of a classic urethral dilator with an electrical connection and a clever detail: a clear groove runs around the shaft every 20 mm. These markings visually indicate how far the Dipstick has been inserted and, at the same time, add extra texture. Choose from 6, 8, 10, and 12 mm; each version is 175 mm long, made of solid stainless steel, and hand-polished to a mirror-smooth finish.
The Dipstick is a monopolar e-stim electrode with a single 4 mm connector. This means it forms a single electrical contact point and always works in conjunction with a second compatible electrode for electroplay. The combination of a rounded, tapered tip, long smooth shaft, and those distinctive grooves clearly sets it apart from the UltraSound Smooth. Think of it as the more technical little brother who likes to keep track of exactly where he is along the way.

Four diameters in one UltraSound series

E-Stim Systems manufactures the UltraSound Dipstick in four diameters: 6, 8, 10, and 12 mm. The total length remains the same for every version at 175 mm, of which approximately 165 mm is insertable.
The difference between the variants therefore lies primarily in the shaft’s thickness. This allows you to choose a diameter that suits your experience and preference without changing the length, connector, or basic design.
For those who use different diameters, a single product family also offers clarity: the same length, the same 4-mm connector, and the same Dipstick markings, but with a different thickness each time.

6 mm - with a tapered tip starting at approximately 4 mm

The UltraSound Dipstick 6 mm is the thinnest version. The shaft has a nominal diameter of 6 mm, while the first 20 mm gradually taper from approximately 4 mm to 6 mm.
This makes this variant the one with the smallest diameter in the Dipstick series. The rounded and gradually widening tip prevents an abrupt transition to the full shaft thickness.

8 mm - the next step in diameter

With the UltraSound Dipstick 8 mm, the shaft widens to 8 mm. The first 20 mm gradually increase from approximately 6 to 8 mm.
The length remains exactly the same as that of the 6 mm version. So you’re choosing purely for a larger diameter, without switching to a longer instrument at the same time.

10 mm - noticeably sturdier

The UltraSound Dipstick 10 mm has a shaft diameter of 10 mm and starts at around 8 mm at the tip. Over the first 20 mm, the diameter gradually increases to the full 10 mm.
This makes the difference from the smallest version quite significant. A few millimeters might sound modest on a ruler, but with a round shaft, the total cross-sectional area increases much faster than the number after the diameter would suggest.

12 mm - the largest UltraSound Dipstick

At the top of the series is the UltraSound Dipstick 12 mm. The shaft has a diameter of 12 mm, and the tapered first 20 mm start at around 10 mm.
This is the largest diameter in this Dipstick series and is primarily intended for experienced users who specifically choose this size. Here, too, the manufacturer has maintained the same total length of 175 mm and a maximum insertable length of approximately 165 mm.

The four sizes clearly listed side by side

• 6 mm: Ø 6 mm - tip approx. 4 → 6 mm - total 175 mm - maximum insertable length 165 mm
• 8 mm: Ø 8 mm - tip approx. 6 → 8 mm - total 175 mm - maximum insertable length 165 mm
• 10 mm: Ø 10 mm - tip approximately 8 → 10 mm - total 175 mm - maximum insertable length 165 mm
• 12 mm: Ø 12 mm - tip approximately 10 → 12 mm - total 175 mm - maximum insertable length 165 mm

Grooves every 20 mm: that’s why it’s called the Dipstick

The main difference between the UltraSound Dipstick and the UltraSound Smooth lies in the shaft. E-Stim Systems has added a groove every 20 mm to the Dipstick.
These grooves serve two purposes. They provide a visual indication of insertion depth and create tactile transitions along the otherwise mirror-smooth shaft.
So the name “Dipstick” isn’t just British product humor. Just like a classic dipstick, the design gives you visible reference points along its length. Except this is a measuring tool for a considerably more interesting hobby than checking engine oil.

Dipstick vs. UltraSound Smooth

The UltraSound Smooth and UltraSound Dipstick share many features. Both are available in 6, 8, 10, and 12 mm, are 175 mm long, have a tapered tip, and are made of solid, mirror-polished stainless steel.
The difference lies in the long shaft. The Smooth is almost entirely smooth, while the Dipstick features its characteristic grooves every 20 mm.
Those looking for a shaft that’s as smooth as possible are more likely to choose the Smooth. Those who find visible depth markings and extra tactile texture appealing will prefer the Dipstick.

Solid Stainless Steel with a Mirror-Polished Finish

E-Stim Systems manufactures the UltraSounds from solid stainless steel. Each Dipstick is then polished to a mirror-like finish.
The smooth metal surface is durable, non-porous, and easy to clean thoroughly. The rounded tip and carefully polished shaft are particularly important for a product designed for urethral use.
E-Stim Systems has added extra-deep grip grooves to the rear section. This ensures the Dipstick remains easier to handle when your fingers have less grip due to lubricant.

One 4 mm connector: the Dipstick is monopolar

There is one standard 4 mm socket on the rear. This makes the UltraSound Dipstick a monopolar electrode.
This means that the Dipstick serves as only one of the two required electrical contact points. For e-stim, you always need a second suitable contact electrode to complete the circuit.
For this purpose, you can use, for example, a conductive rubber loop, a suitable pad, or another monopolar electrode. The appropriate combination depends on your power box, cable configuration, and the chosen second electrode.
For connection, E-Stim Systems recommends, among others, the standard 4 mm Cable, the 4 mm Low Profile Cable, and, in suitable combinations, the BiCable. A connection cable is not included with the Dipstick as standard.

Hygiene is an absolute priority during urethral use

Careful hygiene is essential during urethral use. E-Stim Systems recommends cleaning the electrode with an alcohol wipe immediately before use and using a suitable sterile lubricant during use.
Work with clean hands and ensure that both the Dipstick and everything it comes into contact with are clean. Never force the dilator. Choose a diameter that matches your experience level and stop immediately if you experience sharp pain, resistance, bleeding, or any other unexpected discomfort.
Numbing lubricants are not a wise choice for urethral play: pain and unusual resistance are important signals that you want to be able to feel.

Stainless steel that can be boiled

After use, the Dipstick can be cleaned with warm water and a mild detergent or suitable sterilizing solution.
Because the UltraSound is made of solid stainless steel and has no fixed cable, E-Stim Systems confirms that the electrode can also be boiled. Of course, remove any connecting cables first.
Dry the Dipstick completely after cleaning before storing it. Pay extra attention to the grooves and the 4 mm socket to ensure no moisture remains there.

Lifetime warranty

The UltraSound Dipstick is manufactured in the United Kingdom and is one of E-Stim Systems’ premium electrodes. The manufacturer offers a lifetime warranty for the original purchaser, subject to the applicable warranty terms and conditions.
This aligns well with its design: no battery, no motor, and no vulnerable electronics inside the electrode itself. Essentially, you’re getting a precision-manufactured piece of solid stainless steel with a 4 mm connector—simple on paper, but executed with great precision.

General Features

• Brand: E-Stim Systems
• Product: UltraSound Dipstick
• Type: urethral dilator / sound / monopolar e-stim electrode
• Variants: 6, 8, 10, and 12 mm
• Total length: 175 mm
• Maximum insertable length: approximately 165 mm
• Material: solid stainless steel
• Mirror-polished finish
• Rounded, tapered tip
• First 20 mm gradually tapers to the nominal diameter
• Tip starts approximately 2 mm thinner than the shaft diameter
• Characteristic Dipstick grooves every 20 mm
• Grooves serve as a visual indication of insertion depth
• Additional grip grooves on the rear
• Monopolar electrode
• 1 × 4 mm socket
• Second electrical contact point required for e-stim
• Compatible with appropriate 4 mm cable configurations
• Connection cable not included
• According to E-Stim Systems, solid stainless steel can be boiled
• Manufactured in the United Kingdom
• Lifetime warranty for the original purchaser under manufacturer’s terms

FAQ

Which size of the E-Stim Systems UltraSound Dipstick Electrosex Dilator should I choose?
The Dipstick is available in 6, 8, 10, and 12 mm diameters. All four versions are 175 mm long and have a maximum insertable length of approximately 165 mm. The first 20 mm of the tip is approximately 2 mm thinner and gradually increases to the full shaft diameter.
What is the difference between the E-Stim Systems UltraSound Dipstick Electrosex Dilator and the UltraSound Smooth?
Both series share the same basic construction, diameters, and length. However, the Dipstick features a groove in the shaft every 20 mm. These markings provide a visual indication of insertion depth and add texture. The UltraSound Smooth does not have these periodic grooves.
Does the E-Stim Systems UltraSound Dipstick Electrosex Dilator require a second electrode?
Yes. The Dipstick has a single 4-mm connection and is monopolar. A second suitable contact point is therefore needed to complete the e-stim circuit—for example, a conductive rubber loop, pad, or other suitable monopolar electrode.
How do I clean the E-Stim Systems UltraSound Dipstick Electrosex Dilator?
Clean it thoroughly after use with warm water and a mild detergent or a suitable sterilizing solution. Because the Dipstick is made of solid stainless steel, E-Stim Systems states that it can also be boiled. For urethral use, the manufacturer also recommends cleaning it with an alcohol wipe immediately before use and using sterile lubricant.
With the E-Stim Systems UltraSound Dipstick, you can choose not only between 6, 8, 10, and 12 mm, but also the distinctive 20 mm markings that give this electrosound device its unique character. Your chosen diameter will be shipped in quick, careful, and completely discreet packaging.