SSND-RNDMRIB expanded random ball silicone urethral sound featuring 33 alternating ribbed sections measuring 14.5 to 15.5mm, a 10mm tapered entry tip, an 11mm retention valley, and a 15-inch insertable length on a blue grid background.
A collection of SSND-RNDMRIB silicone urethral sounds in various colors including pink, orange, green, blue, black, and translucent white, featuring alternating ribbed sections and safety flange bases on a white background.

SSND-RNDMRIB

Regular price$52.00
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Designed for experienced sounders seeking serious anatomical stimulation, the SSND-RNDMRIB is an advanced-level silicone sounding rod that combines exceptional length with dynamic textural feedback. Constructed with an array of 33 alternating ribs that vary in slope, length, and contour, this piece delivers continuous tactile variation during insertion and depth progression. The entry profile transitions smoothly from a gently sloped 10mm tip into the progressive ribbed body, which averages between 14.5mm and 15.5mm in diameter across its full insertable length. An integrated 11mm retention valley positioned just above the solid safety flange base allows for secure positioning and effortless fluid control during extended wear sessions. Available in both solid structural configurations and hollow core designs to facilitate fluid flow or breathability.

  • Gentle Tapered Entry Tip: Starts at 10mm (30Fr) to establish precise, comfortable alignment.

  • Progressive Ribbed Shaft: Features 33 alternating ribs (14mm to 15.5mm / 42Fr to 46.5Fr) designed for continuous internal tactile engagement.

  • Anchoring Retention Valley: Narrows to 11mm (33Fr) above the base to provide secure hold and prevent slip.

  • Ergonomic Safety Flange: Broad flared base ensures complete user control, stopping progression safely.

  • Dual Core Architecture: Available as a solid sounding rod or a hollow catheter sound for specialized liquid management.

The SSND-RNDMRIB features a total overall length of 15 inches (390mm) of pure insertable depth. This deep-reach design easily navigates past the penile urethra to access the prostatic urethra and bladder region. Users should ensure complete relaxation and liberal lubrication to accommodate both the full length and the heavy 15.5mm maximum diameter profile.

Segment / Size Diameter (mm) French Size (Fr) / Inches
Entry Tip 10.0mm 30.0 Fr
First Rib 14.0mm 42.0 Fr
Peak Rib Body 14.5mm – 15.5mm 43.5 Fr – 46.5 Fr
Retention Valley 11.0mm 33.0 Fr
Safety Base Flared Base

 

👑 Bob's Choice Recommendations:

    • Experience Level: Advanced 

       

      #10 (Medium): With an overall length of 15 inches and peak rib diameters reaching 15.5mm (46.5Fr), this medium firmness offers the ideal balance—providing necessary column rigidity to guide the long piece smoothly while retaining enough gentle flex to conform safely to internal contours.

      #00-50 (Soft):  Is recommended for users prioritizing comfort. The softer density allows the substantial 46.5Fr ribs to compress slightly during insertion, reducing pressure along the tract.

       

Color Options: #18 and #30 are available in pure translucent. #00-20, #00-50, and #10 base colors are translucent white and can be mixed with any standard color.

⚠️ Important Safety Disclaimer: Because individual anatomy varies, we cannot guarantee a full fit for all longer or larger diameter pieces. Please use all products with care. By purchasing, you accept full responsibility for safe use. If you experience discomfort, discontinue use immediately.

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