SSND-FLAT MIDBALL
Recommended for open bore options
SSND-FLAT MIDBALL features a specialized 17.5mm maximum diameter profile engineered with a dual-axis mid-shaft expansion. With an overall length of 7" (180mm) and an insertable length of 6.6" (160mm), this sound blends progressive tapers with localized retention contours. The smooth entry tip begins at 10mm and tapers gradually up to 12.5mm along the shaft before reaching a 21mm-long mid-ball feature. This central node is uniquely flattened on two sides—measuring 13mm across the flat planes and expanding to 17.5mm along the rounded curves—allowing users to rotate the sound during use for varied directional expansion. Following the mid-ball, the shaft steps down into a 10.2mm primary retention valley, expands to a secondary 15.1mm ridge, and relaxes into a 14.2mm secondary valley before terminating at a 21mm safety flange. Available in both solid-core and open-core options, the hollow configuration supports fluid drainage for extended wear.
Anatomical Sizing & Mechanics
-
Progressive Insertion Taper: Features a 10mm smooth entry tip that expands gradually along the forward shaft to 12.5mm (37.5 Fr) for comfortable depth progression.
-
Dual-Axis Flattened Mid-Ball: Incorporates a 21mm-long mid-shaft expansion measuring 13mm (39 Fr) across its flat surfaces and 17.5mm (52.5 Fr) along its rounded sides for directional stimulation upon rotation.
-
Primary Retention Valley: Narrows down significantly to a 10.2mm (30.6 Fr) retention groove immediately behind the mid-ball to anchor tissue comfortably during wear.
-
Secondary Ridge & Flange: Steps back up to a 15.1mm (45.3 Fr) secondary swell and a 14.2mm (42.6 Fr) valley before meeting the 21mm non-insertable safety flange to prevent over-insertion.
Anatomical Depth Guide
With an overall length of 7" (180mm) and an insertable length of 6.6" (160mm), the SSND-FLAT MIDBALL provides intermediate-depth reach designed for targeted mid-channel expansion. Combined with a maximum diameter of 17.5mm (52.5 Fr) on its rounded axis, it offers substantial volumetric focus alongside deep-reach maneuverability.
Dimension & Sizing Profile
| Segment / Feature | Outer Diameter / Dimension (mm) | French Sizing (Fr) |
| Entry Tip | 10.0mm | 30.0 Fr |
| Tapered Forward Shaft | Up to 12.5mm | Up to 37.5 Fr |
| Flattened Mid-Ball (Flat Axis) | 13.0mm | 39.0 Fr |
| Flattened Mid-Ball (Max Diameter) | 17.5mm | 52.5 Fr |
| Primary Retention Valley | 10.2mm | 30.6 Fr |
| Secondary Ridge | 15.1mm | 45.3 Fr |
| Secondary Valley | 14.2mm | 42.6 Fr |
| Safety Base Flange | 21.0mm (Non-Insertable) | Flared Base |
👑 Bob's Choice Recommendations
-
Experience Level: Advanced
-
The Prime Durometer Recommendation: #00-50 (Soft) is the primary recommendation for this model. Given the substantial 17.5mm (52.5 Fr) rounded mid-ball expansion on a 6.6" insertable shaft, the softer grade provides essential material compressibility to ease tissue transition over the widest point.
-
The Alternative Durometer: Consider #10 (Medium) for experienced users seeking firmer column strength and distinct tactile resistance across the flattened mid-ball surfaces.
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.
