SSND-SMTPR-13.5mm

Scale up your training program with the smooth, continuous expansion of the SSND-SMTPR-13.5mm. Specially designed for enthusiasts looking to transition comfortably to a larger wider gauge footprint. This sound utilizes an elongated, taper design, by spreading its taper across a full 6.5-inch insertable depth, this probe provides an incredibly steady, low-fatigue stretching experience before dropping into a deep internal retention lock for premium security and comfort.

Anatomical Taper & Retention Mechanics: 

• Elongated Tip Entry: Starts at an approachable 7mm diameter at the rounded point, gradually expanding up to 12mm over the first 1.5 inches of length to smoothly guide entry past the Meatus.

• Graduated Spongy Stretch: Over the remaining 5.5 inches of the shaft, the body slowly and steadily climbs from 12mm up to its commanding 13.5mm maximum diameter, providing a comprehensive stretch along the entire Spongy (Penile) Urethra.

• Deep Sphincter Retention Valley: Right before the base, the 13.5mm crest drops down dramatically into an 8mm narrow retention valley. This pronounced drop allows the surrounding muscle tissue to comfortably relax and collapse into the groove, locking the sound securely in place.

Anatomical Design & Shared Dimensions:

• Overall Length: Approximately 7 inches from end to end.

• Insertable Length: Provides a deep, satisfying 6.5 inches of fully usable insertable depth to the flange.

• Compound Taper Profile: Transitions seamlessly from a 7mm point to a 12mm shoulder, climbing to a 13.5mm peak before dropping to an 8mm anchoring valley.

• Safety Flange Base: Completed with a flat 16.5mm base flange to serve as a reliable, worry-free external stop.

👑 Bob's Choice Recommendations

• Experience Level: Advanced. While the 6.5-inch insertable length is highly manageable, the main shaft scales up to a maximum diameter of 13.5mm. 

• The Prime Durometer Recommendation: Choosing your density defines your stretching style for this model:

  • For Maximum Comfort Expansion: Bob highly recommends our extra-soft #00-50 (soft) material choice. It is highly compressible and delivers a gentle, constantly adapting internal pressure that makes moving up to a larger size feel incredibly plush.

  • For Balanced Compression: Our #10 (medium) material provides a fantastic middle-ground that is still somewhat compressible but offers quicker structural feedback.

  • For Maximum Control: If you want a firm, highly rigid column that holds its exact 13.5mm profile perfectly against tight walls, select our #18 (firm) or #30 (very firm) material options.

 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.