GRB 228 16"

The GRB 228 is a substantial, heavy-duty colon nozzle was designed in response to widespread user requests for a shorter, more manageable alternative to our long-format CT-228 colon tube. While it shares nearly identical, high-capacity girth dimensions with its larger sibling, this streamlined model focuses its impressive profile into a concentrated length—perfect for advanced users who demand extreme internal fullness, maximum volumetric capacity, and unyielding fluid retention.

Advanced Conical Expansion & Hydraulic Lock: Designed to provide a flawless, high-pressure seal, the GRB 228 features a long, continuous entry cone that gradually stretches pelvic floor muscles over a 10-inch span. This smooth escalation culminates in a massive 3.0" primary retention ball, which drops into a heavy-gauge contoured valley. This hourglass-shaped retention neck sits perfectly nestled within the sphincter muscle to form an absolute hydraulic lock, completely eliminating leaks during high-volume enema solution delivery.

Anatomical Design & Dimensions:

• Overall Length: Approximately 17.0” in total length.

• Insertable Depth: Provides a deep, fully usable insertable length of around 12.5” to the primary retention zone.

• Rounded Entry Tip: Starts with a smooth, accessible 1.0” diameter rounded tip to ensure comfortable, guided entry.

• Continuous Taper Shaft: Gradually increases in thickness over the first 10.0” of length, rising smoothly from 1.0" to a maximum expansion diameter of 3.0” (76mm).

• Primary Retaining Ball: Swells into a robust, high-impact 3.5” diameter internal retention swell.

• Sculpted Sphincter Valley: Follows with a thick, supportive retention valley measuring approximately 1 ¾” (1.75") long and 2.5” in diameter to securely cup the sphincter muscle.

• Oversized Base Flange: Terminates at a final, heavy-duty 3.5” diameter bulbous ball flange that acts as an external safety stop and is not intended for insertion.

👑 Bob's Choice Recommendations

• Experience Level: Advanced - Extreme. With a rapid taper up to 3.0" in diameter and a massive 3.5" internal ball, this specialized heavy-gauge appliance is designed for highly experienced, advanced size enthusiasts.

• The Prime Durometer Recommendation: For an extra-thick, heavy-capacity model like the GRB 228, Bob highly recommends ordering in #00-20. Because this piece carries a very large volume of material (expanding up to 3.5"), casting it in our premium soft #00-20 compound ensures that the massive entry cone and retaining balls feel incredibly plush, highly pliable, and forgiving under pressure—allowing the large diameters to conform smoothly to your body's natural internal shape.

• The Maximum Structural Alternative: If you are an elite user who wants this thick conical profile to feel completely solid, unyielding, and maintain its intense, heavy presence under maximum muscle compression, Bob suggests selecting our firm #00-50 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.