SSND-RNDMBALL 7-10mm
Recommended for open bore options
SSND-RNDMBALL, one of our oldest running pieces, features a multi-ball shaft with varied contouring and an integrated retention valley adjacent to the flanged base. Designed for intermediate users, this silicone sound introduces fluctuating structural feedback with 22 distinct expanded sections, going from gradual tapers to defined spherical bulbs, allowing for precise depth control and incremental dilation. Available in an 8-inch entry-level configuration (covering the first 12 expansion stages) or a full 17-inch deep-reach model, it can be ordered in a solid core for maximum density or a hollow pass-through core to support fluid flow or breathability during long-term wear.
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Entry & Tip Dynamics: Tapered mini-ball rounded tip starting at 8.0mm (24 Fr) for smooth, guided initial entry.
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Variable Shaft Progression: 22 individual expanded zones ranging from 8.0mm to a peak 10.6mm (31.7 Fr), delivering multi-point internal feedback along the length.
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Peak Retention & Seal: Expands to 10.4mm before stepping down into a dedicated 7.5mm (22.5 Fr) retention valley designed to securely anchor inside the primary sphincter.
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Safety & Stability Flange: Broad, soft silicone base prevents over-insertion and provides safe external control.
The 8-inch model offers an insertable reach designed to navigate the penile urethra through the prostatic region, while the 17-inch (16.5-inch insertable) version provides complete canal-length reach through to the bladder neck for advanced deep-depth play.
Dimension & Sizing Profile
| Expansion Segment | Diameter (mm) | French Size (Fr) | Inches (approx.) |
| Segment 1 (Tip) | 8.0mm | 24.0 Fr | 0.314" |
| Segment 2 | 9.0mm | 27.0 Fr | 0.354" |
| Segment 3 | 9.5mm | 28.5 Fr | 0.374" |
| Segment 4 | 8.6mm | 25.5 Fr | 0.330" |
| Segment 5 | 9.5mm | 28.5 Fr | 0.374" |
| Segment 6 | 9.8mm | 29.5 Fr | 0.385" |
| Segment 7 | 9.7mm | 29.2 Fr | 0.380" |
| Segment 8 | 10.2mm | 30.5 Fr | 0.400" |
| Segment 9 | 10.0mm | 30.0 Fr | 0.393" |
| Segment 10 | 10.2mm | 30.5 Fr | 0.400" |
| Segment 11 | 9.5mm | 28.5 Fr | 0.374" |
| Segment 12 (8" Model End) | 9.9mm | 29.6 Fr | 0.388" |
| Segment 13 | 10.2mm | 30.5 Fr | 0.400" |
| Segment 14 | 10.5mm | 31.5 Fr | 0.413" |
| Segment 15 | 10.6mm | 31.7 Fr | 0.416" |
| Segment 16 | 10.0mm | 30.0 Fr | 0.393" |
| Segment 17 | 9.4mm | 28.2 Fr | 0.370" |
| Segment 18 | 10.4mm | 31.3 Fr | 0.410" |
| Segment 19 | 10.3mm | 31.0 Fr | 0.406" |
| Segment 20 | 9.9mm | 29.6 Fr | 0.388" |
| Segment 21 | 10.0mm | 30.0 Fr | 0.393" |
| Segment 22 | 10.4mm | 31.3 Fr | 0.410" |
| Retention Valley | 7.5mm | 22.5 Fr | 0.295" |
👑 Bob's Choice Recommendations:
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Experience Level: Intermediate
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The Prime Durometer Recommendation: #10 (Medium) silicone density is the primary choice for optimal structural rigidity, helping with flexing or bowing during insertion while delivering clear, high-definition tactile feedback.
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.
