SSND-Diamond 11-18 silicone stretching sound and plug in multiple colors showing 18mm diamond swell, 11mm retention valley, and 1.3-inch flared base.

SSND-Diamond Tip 11-18mm urethral sound with diamond-shaped body, tapered slender tip, 3.25-inch length, 18mm expanded section, 11mm retention valley

SSND-Diamond Tip 11-18mm urethral sound with diamond-shaped body, tapered slender tip, 3.25-inch length, 18mm expanded section, 11mm retention valley

SSND-Diamond 11-18 silicone stretching sound and plug in multiple colors showing 18mm diamond swell, 11mm retention valley, and 1.3-inch flared base.

SSND-Diamond Tip 11-18mm urethral sound with diamond-shaped body, tapered slender tip, 3.25-inch length, 18mm expanded section, 11mm retention valley

SSND-Diamond Tip 11-18mm urethral sound with diamond-shaped body, tapered slender tip, 3.25-inch length, 18mm expanded section, 11mm retention valley

SSND-Diamond 11-18

$29.00

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Recommended for open bore options

SSND-Diamond 11-18 is a mid-sized step-up model in our diamond-profile series, engineered for smooth tissue expansion and comfortable extended wear. Measuring 3.25" in total length with approximately 2.8" of insertable depth, this piece features a slender, tapered tip that expands steadily up to an 18mm (54 Fr) maximum mid-shaft diameter. Behind the primary expansion, the shaft tapers back into an 11mm (33 Fr) retention valley designed to lock the plug comfortably in place against a wide 1.3" (33mm) flared safety base. Available in solid-core or open-core configurations up to a 1/8" bore, the hollow option allows for natural fluid passage during use.

Anatomical Sizing & Mechanics

Slender Tapered Tip: Features a narrow, gentle entry tip to allow smooth, low-friction entry past the meatus.
Progressive Mid-Shaft Swell: Tapers gradually to an 18mm (54 Fr) peak diameter, delivering substantial volumetric stretching.
Ergonomic Retention Valley: Slopes back down to an 11mm (33 Fr) neck to allow tissue to settle comfortably behind the main body.
Wide Flared Safety Base: Terminates at a 1.3" (33mm) flat flared base for complete stability and reliable over-insertion prevention.

Anatomical Depth Guide

Providing approximately 2.8" (71mm) of insertable depth, the SSND-Diamond 11-18 targets the navicular fossa and pendulous urethra. Its compact-to-mid length profile makes it an excellent choice for extended wear and intermediate stretching.

Dimension & Sizing Profile

Segment / Feature	Outer Diameter (mm)	French Sizing (Fr)
Maximum Mid-Shaft Swell	18.0mm	54.0 Fr
Retention Valley	11.0mm	33.0 Fr
Insertable Depth	2.8" (71mm)	Compact-Mid Plug Profile
Total Length	3.25" (82.5mm)	Extended-Wear Length
Safety Base	1.3" (33.0mm)	Flared Safety Base

👑 Bob's Choice Recommendations

Experience Level: Intermediate
The Prime Durometer Recommendation: #10 (Medium) is the primary recommendation for this model. For a 2.8" insertable diamond plug with an 18mm swell, #10 offers the ideal balance of flexibility for comfortable insertion and body firmness to maintain shape.
The Alternative Durometer: Consider #00-50 (Soft) for users seeking maximum cushioned comfort during extended wear, or #18 (Firm) for added column rigidity during placement.

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- DIM 11-18 Black 0050 1/8

RTS- DIM 11-18 Trans 30 solid

RTS- DIM 11-18 Fl Pink 0020 solid

RTS- DIM 11-18 Yellow 10 solid

RTS- DIM 11-18 Red 10 1/8

RTS- DIM 11-18 Black 0050 3/32

RTS- DIM 11-18 Fl Pink 0050 5/32

RTS- DIM 11-18 White 0050 5/32

RTS- DIM 11-18 Green 0050 solid

RTS- DIM 11-18 Yellow 0050 solid

RTS- DIM 11-18 Fl Yellow 0020 solid

RTS- DIM 11-18 Red 30 solid

RTS- DIM 11-18 Pink 30 solid

RTS- DIM 11-18 Black 30 solid

RTS- DIM 11-18 Black 30 1/8

RTS- DIM 11-18 Trans 30 1/8

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SSND-Diamond 11-18 Silicone Stretching Sound – 54Fr