Size chart showing the complete JWW series short silicone urethral stretching sounds lined up sequentially from 10mm to 18.5mm across various colors.
3D interactive model of the JWW short silicone urethral stretching sound showing smooth tapered shaft and base flange

SSND-JWW 10mm-18.5mm

Regular price$22.00
/
Shipping calculated at checkout.
Color
Diameter
  • In stock, ready to ship
  • Backordered, shipping soon

The JWW Series is a smooth-taper stretching sound scaled precisely across 18 diameters, from 10mm up to 18.5mm (roughly 0.39"–0.73"). Every dimension — length, insertable depth, retention valley, and flange — grows proportionally with diameter, so the feel stays consistent as you move up in size.

Details

  • Design: Smooth taper, no ribs or valleys
  • Diameter range: 10.0 mm – 18.5 mm (18 sizes, 0.5mm increments)
  • Core: Available solid or open-core
Max
Diameter
(mm)
Total
Length
(mm)
Insertable
Length
(mm)
Retention
Valley
(mm)
Flange
Diameter
(mm)
10.0 mm 63.0 mm 45.7 mm 8.0 mm 18.2 mm
10.5 mm 65.8 mm 47.9 mm 8.4 mm 19.2 mm
11.0 mm 68.7 mm 50.0 mm 8.9 mm 20.3 mm
11.5 mm 71.6 mm 52.1 mm 9.3 mm 21.3 mm
12.0 mm 74.5 mm 54.3 mm 9.7 mm 22.4 mm
12.5 mm 76.8 mm 55.8 mm 10.6 mm 23.7 mm
13.0 mm 79.7 mm 58.0 mm 11.0 mm 24.7 mm
13.5 mm 82.6 mm 60.1 mm 11.5 mm 25.8 mm
14.0 mm 85.5 mm 62.3 mm 11.9 mm 26.8 mm
14.5 mm 88.5 mm 64.4 mm 12.0 mm 27.7 mm
15.0 mm 91.5 mm 66.6 mm 12.4 mm 28.6 mm
15.5 mm 94.6 mm 68.7 mm 12.8 mm 29.6 mm
16.0 mm 97.4 mm 71.0 mm 13.3 mm 30.5 mm
16.5 mm 100.4 mm 73.2 mm 13.7 mm 31.4 mm
17.0 mm 103.3 mm 75.4 mm 14.1 mm 32.2 mm
17.5 mm 106.2 mm 77.6 mm 14.5 mm 33.1 mm
18.0 mm 109.1 mm 79.8 mm 14.9 mm 34.0 mm
18.5 mm 112.0 mm 82.0 mm 15.3 mm 35.0 mm

All measurements are approximate.

Choosing your silicone firmness

For the smaller sizes in this range (up to about 13mm), #10 (Medium) holds the taper's shape well during insertion. For the larger sizes (13.5mm and up), #00-50 (Soft) is worth considering, since the added material volume compresses more comfortably at those diameters.

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 series is intended for intermediate to advanced users progressing through sizes gradually, not for jumping straight to a larger 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.

This site is protected by hCaptcha and the hCaptcha Privacy Policy and Terms of Service apply.

  • 5 stars: 1 (100%)
  • 4 stars: 0 (0%)
  • 3 stars: 0 (0%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
S
Steve

Absolutely fantastic little plug, cannot recommend it enough.
Got it in the softest as I'm working my way up from 8mm metal, very comfortable, smooth and forgiving.
Will likely end up with a collection of sizes as I continue to train.