SSND-RNDMBALL 9-12.5
Recommended for open bore options
SSND-RNDMBALL 9-12.5
The SSND-RNDMBALL 9-12.5 was built from customer requests for a deeper-reaching multi-ball design — 22 nodes that swell and contract along a full 16.5" length, with a dedicated retention zone near the base to hold it in place.
Details
- Insertable length: 16.5" (419 mm)
- Entry tip: 9.5 mm
- 22 nodes, climbing from 11 mm up to a 12.7 mm peak (segment 15)
- Final segment (22nd): 12.0 mm
- Retention valley: 9.0 mm
- Base: Flat safety flange
Segment table
| Segment | Diameter | Segment | Diameter |
| 1 (tip) | 9.5 mm | 12 | 11.0 mm |
| 2 | 11.0 mm | 13 | 11.1 mm |
| 3 | 11.5 mm | 14 | 11.5 mm |
| 4 | 11.5 mm | 15 | 12.7 mm |
| 5 | 11.2 mm | 16 | 12.5 mm |
| 6 | 12.2 mm | 17 | 11.5 mm |
| 7 | 11.5 mm | 18 | 12.2 mm |
| 8 | 12.4 mm | 19 | 12.3 mm |
| 9 | 11.3 mm | 20 | 12.3 mm |
| 10 | 11.9 mm | 21 | 12.2 mm |
| 11 | 11.3 mm | 22 | 12.0 mm |
How it works
The 9.5mm tip leads into 22 nodes that swell and contract irregularly, climbing gradually toward a 12.7mm peak around segment 15. The final node narrows sharply into a 9mm retention valley, letting the muscle close naturally ahead of the flat base flange.
Choosing your silicone firmness
Bob recommends #10 (Medium) or #00-50 (Soft) — both keep this long, 22-node layout comfortable and low-fatigue over its full length. One customer who wears it daily for extended periods (including a solid, no-bore version in #00-50) reported it holds securely and stays comfortable through hours of regular activity.
Color options
#18 and #30 are available in pure translucent silicone.
#00-20, #00-50, and #10 use a translucent white base and can be mixed with our standard colors.
Please note
This is intended for experienced intermediate to advanced users, given its 16.5" length and 12.7mm peak diameter.
Use appropriate lubrication and never force insertion. Stop immediately if you experience pain, bleeding, or significant discomfort. Inspect the sound before each use and do not use it if damaged.
