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SSND-Double Expansion 12-inch advanced silicone urethral sound resting on a blue grid background, showcasing its dual 14mm and 13.7mm expansion nodes, 9mm tapered tip, and flared safety base.

SSND-Double Expansion 12-inch advanced silicone urethral sound resting on a blue grid background, showcasing its dual 14mm and 13.7mm expansion nodes, 9mm tapered tip, and flared safety base.

SSND-Double Expansion 12-inch advanced silicone urethral sound resting on a blue grid background, showcasing its dual 14mm and 13.7mm expansion nodes, 9mm tapered tip, and flared safety base.

SSND-Double Expansion 12-inch advanced silicone urethral sound resting on a blue grid background, showcasing its dual 14mm and 13.7mm expansion nodes, 9mm tapered tip, and flared safety base.

SSND-Double Expansion 12"

Regular price$53.00

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Shipping calculated at checkout.

Color

Color

Black

Translucent

Fluorescent Orange

Fluorescent Yellow

Fluorescent Green

Fluorescent Pink

White

Pink

Red

Dark Red

Blood Red

Blue

Flesh

Brown

Green

Yellow

Recommended for open bore options

SSND-Double Expansion 12-inch advanced silicone urethral sound resting on a blue grid background, showcasing its dual 14mm and 13.7mm expansion nodes, 9mm tapered tip, and flared safety base.

SSND-Double Expansion 12-inch advanced silicone urethral sound resting on a blue grid background, showcasing its dual 14mm and 13.7mm expansion nodes, 9mm tapered tip, and flared safety base.

SSND-Double Expansion 12"

The SSND-Double Expansion 12" is a medium-length sound with two separate expansion nodes along its 11.5" insertable length, each followed by a narrow relief valley — alternating stretch and release rather than one continuous taper.

Details

Tapered entry tip: 9 mm (0.354", 27 Fr)
Primary expansion zone: 14 mm (0.551", 42 Fr)
Muscular relief valley: 8.4 mm (0.331", 25.2 Fr)
Secondary expansion zone: 13.7 mm (0.539", 41.1 Fr)
Retention valley: 8.5 mm (0.335", 25.5 Fr)
Base flange: 14.2 mm (0.559", 42.6 Fr)
Total length: 12.25" (310 mm)
Insertable length: 11.5"

Choosing your silicone firmness

Because this model reaches a 14mm maximum diameter, Bob recommends #00-50 (Soft) — it stays compressible during insertion and gently stretches outward once in place.

A note on lubrication: the #00-50 silicone takes a bit more lube and a bit more time to insert than firmer options. Apply generously to both the sound and the canal, and take it slow.

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

At 14mm across two separate expansion points, this is an advanced-sizing piece intended for users who already have stretching experience.
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.

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Ready To Ship

These pieces have been made and are ready to ship out.

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SSND-Double Expansion 12-inch advanced silicone urethral sound resting on a blue grid background, showcasing its dual 14mm and 13.7mm expansion nodes, 9mm tapered tip, and flared safety base.

SSND-Double Expansion 12-inch advanced silicone urethral sound resting on a blue grid background, showcasing its dual 14mm and 13.7mm expansion nodes, 9mm tapered tip, and flared safety base.

SSND-Double Expansion 12"

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SSND-Double Expansion 12" Dual-Wave Sound