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SSND-MRB 8-10mm flexible multi-ribbed silicone urethral sound, featuring a gently tapered tip, 10 graduated ribs (8.4mm to 10mm), a 6.7mm retention valley, a flared base flange, and 6-inch insertable length, shown on a grid background.

SSND-MRB 8-10mm ribbed urethral sound showing 10 graduated ribs with retention valley, 6-inch length, 25-30 French

SSND-MRB 8-10mm flexible multi-ribbed silicone urethral sound, featuring a gently tapered tip, 10 graduated ribs (8.4mm to 10mm), a 6.7mm retention valley, a flared base flange, and 6-inch insertable length, shown on a grid background.

SSND-MRB 8-10mm ribbed urethral sound showing 10 graduated ribs with retention valley, 6-inch length, 25-30 French

SSND-MRB 8-10

Regular price$34.00

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Color

Color

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Translucent

Fluorescent Orange

Fluorescent Yellow

Fluorescent Green

Fluorescent Pink

White

Pink

Red

Dark Red

Blood Red

Blue

Flesh

Brown

Green

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Recommended for open bore options

SSND-MRB 8-10mm flexible multi-ribbed silicone urethral sound, featuring a gently tapered tip, 10 graduated ribs (8.4mm to 10mm), a 6.7mm retention valley, a flared base flange, and 6-inch insertable length, shown on a grid background.

SSND-MRB 8-10mm ribbed urethral sound showing 10 graduated ribs with retention valley, 6-inch length, 25-30 French

Engineered in response to customer requests, the SSND-MRB 8-10 is an advanced, multi-ribbed flexible silicone urethral sound designed for progressive dilation and tactile stimulation. Featuring a series of 10 uniquely contoured structural ribs, this profile gradually opens the channel before reaching an enlarged 10mm anchor bulb that transitions directly into an anatomical retention valley. This structural notch seats directly at the internal sphincter just inside the tip, allowing the muscle to safely close and lock the piece comfortably in place. Available in a solid density or an optional 3/32" hollow open-core configuration for fluid passage or extended wear.

Entry Tip & Shaft Progression: Tapered 8.4mm (25Fr) entry tip leading through 9 sequentially sized ribs (8.8mm to 9.1mm) that gently stretch the channel with a wave-like tactile profile.
Peak Retention Bulb: Rib 10 steps up to a peak diameter of 10mm (30Fr) to perform a temporary dilation stretch.
Anatomical Retention Valley: Drops sharply behind the main bulb to a slim 6.7mm groove, providing a secure, natural anchor point for the sphincter to close around during extended play.
Safety Base: Broad flanged style base prevents over-insertion and ensures effortless, safe removal.

The SSND-MRB 8-10 features a total length of approximately 6.25 inches with an insertable depth of 6.0 inches (152mm) measured directly from the tapered tip to the flanged safety base. Its total length effortlessly spans the full anterior urethra for deep internal placement.

Dimension & Sizing Profile

Segment	Max Diameter (mm)	French Size (Fr)
Tip (Rib 1)	8.4 mm	25 Fr
Rib 2	8.9 mm	26 Fr
Rib 3	9.0 mm	27 Fr
Rib 4	9.1 mm	27.3 Fr
Rib 5	8.8 mm	26 Fr
Rib 6	8.8 mm	26 Fr
Rib 7	8.8 mm	26 Fr
Rib 8	8.9 mm	26 Fr
Rib 9	9.1 mm	26.3 Fr
Rib 10	10.0 mm	30 Fr
Valley	6.7 mm	20 Fr
Base	Flanged	-

👑 Bob's Choice Recommendations

Experience Level: Beginner Urethral Sound (Up to 10mm peak shaft diameter).
The Prime Durometer Recommendation: #10 (Medium) silicone density is strongly recommended as the default primary choice. This firm yet flexible density provides optimal structural integrity, preventing bowing or buckling during insertion while providing high-definition tactile feedback along every rib.

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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RTS-MRB 8-10 Green 10 Solid

RTS-MRB 8-10 White 0020 Solid

RTS-MRB 8-10 Trans White 0050 Solid

RTS-MRB 8-10 Yellow 0050 3/32

RTS-MRB 8-10 White 10 Solid

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SSND-MRB 8-10mm flexible multi-ribbed silicone urethral sound, featuring a gently tapered tip, 10 graduated ribs (8.4mm to 10mm), a 6.7mm retention valley, a flared base flange, and 6-inch insertable length, shown on a grid background.

SSND-MRB 8-10mm ribbed urethral sound showing 10 graduated ribs with retention valley, 6-inch length, 25-30 French

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Ribbed Silicone Urethral Sound (8.5mm - 10mm) | SSND-MRB