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CSRE 2.5-inch rounded-edge colonic speculum retention enhancer in royal blue silicone on a blue grid background, showcasing its 6-inch total length, 4.75-inch insertable depth, and wide 3-inch flanged base

Colonic speculum retention enhancer with 2.5-inch rounded edge design, 6-inch total length, 4.75-inch insertable depth, 7/8-inch bore

White and translucent silicone CSRE 2.5-inch rounded-edge colonic speculum retention enhancers, shown standing upright and lying flat on a light surface.

Colonic speculum retention enhancer with 2.5-inch rounded edge design, 6-inch total length, 4.75-inch insertable depth, 7/8-inch bore

CSRE 2.5-inch rounded-edge colonic speculum retention enhancer in royal blue silicone on a blue grid background, showcasing its 6-inch total length, 4.75-inch insertable depth, and wide 3-inch flanged base

Colonic speculum retention enhancer with 2.5-inch rounded edge design, 6-inch total length, 4.75-inch insertable depth, 7/8-inch bore

White and translucent silicone CSRE 2.5-inch rounded-edge colonic speculum retention enhancers, shown standing upright and lying flat on a light surface.

Colonic speculum retention enhancer with 2.5-inch rounded edge design, 6-inch total length, 4.75-inch insertable depth, 7/8-inch bore

CSRE 2.5"

Regular price$46.00

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Shipping calculated at checkout.

Color

Color

Black

Translucent

Fluorescent Orange

Fluorescent Yellow

Fluorescent Green

Fluorescent Pink

White

Pink

Red

Dark Red

Blood Red

Blue

Flesh

Brown

Green

Yellow

Recommended for open bore options

CSRE 2.5-inch rounded-edge colonic speculum retention enhancer in royal blue silicone on a blue grid background, showcasing its 6-inch total length, 4.75-inch insertable depth, and wide 3-inch flanged base

Colonic speculum retention enhancer with 2.5-inch rounded edge design, 6-inch total length, 4.75-inch insertable depth, 7/8-inch bore

White and translucent silicone CSRE 2.5-inch rounded-edge colonic speculum retention enhancers, shown standing upright and lying flat on a light surface.

Colonic speculum retention enhancer with 2.5-inch rounded edge design, 6-inch total length, 4.75-inch insertable depth, 7/8-inch bore

The CSRE 2.5" is a largest of the CSRE line — the same watertight speculum adapter, sized up with the largest profile at the expansion ring for easy entry and removal.

Details

Overall length: 6.0" (15.2 cm)
Insertable depth: 4.75" (12.1 cm)
Tapered entry tip: 3.0" (7.6 cm) long
Maximum retention ring: 2.5" (6.4 cm), rounded-edge profile
Retention valley: 1-3/8" (3.5 cm)
Base flange: 3.0" (7.6 cm)
Configuration: Bored (7/8" / 22.25mm open bore) or solid

How it works

With lubricant applied, the piece is inserted with slow, gentle twisting. The sphincter dilates over the rounded 2.5" retention ring, then settles back into the 1-3/8" retention valley to hold the piece in place and form a watertight seal. A standard plastic speculum then slides through the 7/8" bore to begin the session.

Who it's for

This is a professional-grade tool built to interface with a colonic speculum kit — intended for hydrotherapy providers or experienced home users.

Choosing your firmness

Bob recommends #10 (Medium) — it holds the 2.5" ring's shape to anchor the speculum securely and maintain the seal under pressure.

If you or your client have sensitive anatomy, #00-50 (Soft) is also available for a more compliant, lower-resistance sleeve.

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.
#00-20, #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.

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Ready To Ship Model B

These pieces have been made and are ready to ship out.

CSRE 2.5-inch rounded-edge colonic speculum retention enhancer in royal blue silicone on a blue grid background, showcasing its 6-inch total length, 4.75-inch insertable depth, and wide 3-inch flanged base

RTS- CSRE2.5 Trans 18 7/8"

CSRE 2.5-inch rounded-edge colonic speculum retention enhancer in royal blue silicone on a blue grid background, showcasing its 6-inch total length, 4.75-inch insertable depth, and wide 3-inch flanged base

RTS- CSRE2.5 Pink 0020 7/8"

CSRE 2.5-inch rounded-edge colonic speculum retention enhancer in royal blue silicone on a blue grid background, showcasing its 6-inch total length, 4.75-inch insertable depth, and wide 3-inch flanged base

RTS- CSRE2.5 Black 0020 7/8"

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CSRE 2.5-inch rounded-edge colonic speculum retention enhancer in royal blue silicone on a blue grid background, showcasing its 6-inch total length, 4.75-inch insertable depth, and wide 3-inch flanged base

Colonic speculum retention enhancer with 2.5-inch rounded edge design, 6-inch total length, 4.75-inch insertable depth, 7/8-inch bore

White and translucent silicone CSRE 2.5-inch rounded-edge colonic speculum retention enhancers, shown standing upright and lying flat on a light surface.

Colonic speculum retention enhancer with 2.5-inch rounded edge design, 6-inch total length, 4.75-inch insertable depth, 7/8-inch bore

Customer Reviews

Based on 2 reviews

100%

(2)

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(0)

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(0)

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W

William

I have had the CSRE-2.75 since May 2018. Over that period it has been used nigh on eighty times and it looks as good as new. Four nice ladies have used it on me while giving me my colonic and all have been really enthusiastic. Thank you so much SN

J

John

Amazing toy!

5 stars: 2 (100%)
4 stars: 0 (0%)
3 stars: 0 (0%)
2 stars: 0 (0%)
1 star: 0 (0%)

W

William

I have had the CSRE-2.75 since May 2018. Over that period it has been used nigh on eighty times and it looks as good as new. Four nice ladies have used it on me while giving me my colonic and all have been really enthusiastic. Thank you so much SN

J

John

Amazing toy!

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2.5" Colonic Speculum Retention Enhancer