CT-103 1.35" Colon Tube
Recommended for open bore options
The CT-103 is a custom silicone colon tube with a 1.35" (34.3 mm) outer diameter. It is available in lengths from 18" to 115", with different options for tip style, flange, bore size, color, and silicone firmness.
Details
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Outer diameter: 1.35" (34.3 mm)
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Available lengths: 18", 20", 24", 28", 32", 36", 40", 44", 48", 60", and 115"
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Tip styles: Tip Style A (Bumpy) or Tip Style B (Smooth Tapered)
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Flange options: 1.75" Flange or No Flange
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115" length: Cannot have a bore hole
Tip Style A — Bumpy
A textured entry design with progressive contours leading into the 1.35" main shaft.
Tip Style B — Smooth Tapered
A gradually tapered entry that transitions into the full 1.35" shaft diameter.
Flange Options
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1.75" Flange: Multi-stage retention design with an approximately 1.7" primary ball, a 1" retention valley, and a final 1.8" safety flange approximately 1.25" long.
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No Flange: Finishes without an integrated flange. This option is available by request.
Choosing Your Silicone Firmness
At 1.35" in diameter throughout the shaft, the CT-103 is intended for more experienced users and is not recommended for beginners.
For this diameter, Bob recommends #10 (Medium) for a balance of shaft stability and flexibility at the tip.
If you prefer a softer and more flexible tube, Bob recommends #00-50 (Soft).
Color Options
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#18 and #30: Pure translucent silicone.
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#00-20, #00-50, and #10: Translucent white base and can be mixed with standard colors.
Please Note
The CT-103 is a large-diameter tube and is best suited to experienced users. The shorter lengths provide a more manageable option, while the longer lengths are more advanced.
The 115" version cannot be made with a bore hole.
Use appropriate lubrication and never force insertion. Stop immediately if you experience pain, bleeding, or significant discomfort. Inspect the sound before each use and do not use it if damaged.