The GRB 103 is a shorter, 12" version of our CT-103 colon tube, with a robust 1.3" shaft and a large retention ball near the base for hands-free anchoring.

Details

• Total length: 12.0" (30.5 cm)
• Insertable depth: 11.0" (27.9 cm)
• Shaft diameter: 1.3" (3.3 cm)
• Retention ball diameter: 2.0" (5.1 cm)
• Retention valley: 1.0" (2.5 cm) long x 1.3" (3.3 cm) diameter

How it works

The segmented, ribbed tip flexes to follow the body's natural curves as it's inserted, delivering fluid deep into the lower sigmoid colon — this reduces the early cramping that comes with a shallower fill. Near the base, the shaft swells to a 2.0" (5.1 cm) retention ball before dropping into a 1.0" (2.5 cm) long, 1.3" (3.3 cm) diameter retention valley, where the surrounding muscle anchors the tube once it's fully inserted to the flared base flange.

Who it's for

This is a piece for experienced users. It shares the ribbed texture of our CT-103 series in a shorter, more intense package, and isn't recommended for beginners.

Choosing your firmness

Because a 1.3" shaft with a 2.0" retention ball carries a lot of material mass, Bob recommends #00-50 (Soft) for most users, or #10 (Medium) if you want it a bit firmer.

If you're unsure which firmness to choose, we recommend ordering our silicone firmness samples first.

Color options

#18 and #30 are available in pure translucent.
#00-50 and #10 are translucent white base materials and can be mixed with standard colors.

Please note

Everyone's anatomy is different, and we cannot guarantee that a particular size or configuration will be suitable for everyone.
Use appropriate lubrication, never force the product, and stop if you experience pain or significant discomfort. Inspect the silicone before each use and do not use it if damaged.