OF 13

The OF 13 stands as our most impressive, large-scale nozzle, meticulously engineered for advanced users who demand the ultimate in internal volume, deep-reach capacity, and uncompromising structural presence. This magnificent model features three beautifully contoured entry ribs that transition into a massive 2.5" (63.5mm) primary retention ball, delivering an extraordinary sense of internal fulfillment and secure, heavy-duty fluid management.

Anatomical Gluteal Flange & High-Capacity Lock

• Smooth Tapered Tip & Ribbed Shaft: Starts with an ultra-accessible 0.5" (12.7mm) tip tapering to 1.3" (33.0mm), leading into three distinct 1.4" (35.6mm) diameter entry ribs for tactile stimulation.

• Massive Retention Ball: Sweeps dramatically upward to a heavy-gauge 2.5" (63.5mm) diameter retention ball for maximum muscular anchorage and an absolute hands-free hydraulic seal.

• Oversized Gluteal Flange: Equipped with a shape-conscious oval base flange measuring approximately 2.0" (50.8mm) thick by 4.0" (101.6mm) wide, designed to sit flush against the gluteal cleft for superior comfort, low-profile fit, and safe handling.

Dimension & Feature Specifications

👑 Bob's Choice Recommendations

• Experience Level: Advanced. With a 10.5" insertable reach and a substantial 2.5" maximum expansion ball, the OF 13 is tailored strictly for experienced size enthusiasts.

• The Prime Durometer Recommendation: For a heavy-capacity, multi-ribbed model like this, Bob highly recommends ordering in #00-50 (Soft). Because a 2.5" solid sphere carries a significant amount of material mass, selecting our #00-50 composition ensures the large retention ball and structural ribs feel incredibly plush, forgiving, and compressible during entry, allowing the piece to conform beautifully to your natural internal anatomy under pressure.

• The Maximum Structural Alternative: If you are a veteran user who wants this thick, ribbed profile to feel completely unyielding, solid, and maintain its intense, heavy presence under maximum muscle compression, Bob suggests selecting our #10 (Medium) composition.

Color Options: #18 and #30 are available in pure translucent. #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 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.