SSND-MD 8-16 advanced black silicone urethral sound shown horizontally on a white background with 1"x1" blue grid squares . Highlighting its 8 graduated segments scaling from 8mm to 16mm, 6-inch insertable length, and deep retention valley ahead of the safety base.
SSND-MD model, 8-16mm (24-48Fr) diameter range, multi-diameter design, 8 graduated segments, 6" insertable, retention valley, stretching sound
SSND-MD model, 8-16mm (24-48Fr) diameter range, multi-diameter design, 8 graduated segments, 6" insertable, retention valley, stretching sound
SSND-MD model, 8-16mm (24-48Fr) diameter range, multi-diameter design, 8 graduated segments, 6" insertable, retention valley, stretching sound

SSND-MD 8-16

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The SSND-MD 8-16, a highly requested, heavy-gauge evolution of our multi-dimensional flexible stretching series. Engineered explicitly for enthusiasts who have mastered our 6-14mm sound and are ready to safely step up to larger volumes, this premium platinum-cured silicone sound utilizes an 8-stage segmented expansion profile. The design allows each independent ridge to smoothly stimulate and prepare the tissue, paving a predictable, low-friction path for the slightly larger segment following right behind it.

Anatomical Sizing & 8-Segment Progression Mechanics:

Calibrated to deliver a highly effective, interlocking volumetric stretch, this sound features a beautifully balanced architectural layout across its 8 active segments:

  • The Guided Introduction: Begins with a highly approachable, smooth 8mm (24 French) rounded tip that allows for a comfortable initial entry through the Meatus.

  • The Graduated Mid-Shaft Step Up: The body moves sequentially through precisely stepped expansion nodes measuring 9mm (27 Fr), 10mm (30 Fr), 11mm (33 Fr), and 12mm (36 Fr), giving the canal time to conform to the rising volume.

  • The Heavy-Caliber Peak: The final tracking segments escalate steadily through a robust 13.5mm (40 Fr) and 15mm (45 Fr) ridge before topping out at a colossal 16mm (48 French) maximum diameter for a powerful, high-volume stretch.

  • The Deep Retention Lock: After achieving maximum expansion, the profile drops sharply into a deeper, specialized retention valley. This narrow groove allows the entry sphincter muscle to sit naturally and securely, anchoring the probe safely in front of the integrated safety flange base.

Anatomical Depth Guide:

Offering approximately 6 inches (152mm) of total insertable length up to the flanged base, this compact sound focuses its high-volume expansion strictly within the highly responsive pendulous and lower canal tract. The shorter, low-fatigue profile ensures that the heavy 16mm peak can be managed with absolute control without requiring deep pelvic floor navigation.

Dimension & Sizing Profile

The precise structural breakdown of the MD 8-16 column is calibrated as follows:

Segment Number Largest Diameter (mm) French Sizing (Fr) Architectural Progression Stage
1 8.0mm 24 Fr Smooth rounded entry tip
2 9.0mm 27 Fr Primary step-up ridge
3 10.0mm 30 Fr Low-intermediate tracking node
4 11.0mm 33 Fr Intermediate calibration zone
5 12.0mm 36 Fr High-intermediate volume step
6 13.5mm 40 Fr Advanced tissue expansion ramp
7 15.0mm 45 Fr Heavy-caliber pre-peak stretch
8 16.0mm 48 Fr Maximum diameter peak expansion segment

👑 Bob's Choice Recommendations

  • Experience Level: Advanced. This piece is custom-tailored for experienced practitioners who are ready to transition past 14mm parameters and are ready to step into a full 16mm (48 French) volumetric tissue routine.

  • The Prime Durometer Recommendation: To make this heavy 16mm progression incredibly plush and approachable, Bob highly recommends ordering this piece in our #10 (medium) silicone.

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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