RAMXCION Flange Sizing Kit with 10 Silicone Inserts

RAMXCION’s flange sizing kit combines a nipple measuring ruler with ten silicone inserts in five sizes. It is intended to help identify a suitable insert for a compatible 24mm breast pump flange or shield, but compatibility with a particular pump model is not confirmed.

At a glance

Includes a ruler for measuring nipples and inserts in five graduated sizes.
Listing describes two inserts per size, from 13mm to 21mm.
Inserts are stated to fit 24mm flanges or shields on most pumps and to be easy to install and remove.
The ruler can be used to measure each nipple separately.

Price

£8.49Save 15%

Reference price: ~~£9.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

Five insert sizes provide several options when matching the listing’s stated 24mm flange format.
The measuring ruler and inserts address sizing and fitting in one kit.
The listing claims the silicone is food-grade and BPA-free.

Technical specifications

5 specifications

Identity
Brand	RAMXCION

Dimensions and installation
Weight listed	0.14 Kilograms
Insert sizes	13/15/17/19/21mm
Stated flange compatibility	Suitable for 24mm flange/shield of most pumps
Material	Food-Grade Silicone

What to know before buying

Listing details to confirm

The maker says these inserts suit 24mm flanges or shields on most pumps, which does not establish compatibility with every pump. Check your pump’s flange size and model before buying. The ruler instructions describe both aligning the tool with the nipple edge and fitting the nipple into the largest comfortable circle, so follow the method that is clear to you and measure each side separately.

Who is it for?

A good fit for

People using a breast pump with a compatible 24mm flange who want several insert sizes to try.
New parents seeking a ruler and graduated inserts for flange sizing.

Less suited to

People whose pump flange or shield is not 24mm, unless compatibility is confirmed for their specific model.
Anyone looking for a breast pump rather than sizing accessories.

RAMXCION Flange Sizing Kit with 10 Silicone Inserts · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 1,432 ratings

5 stars72%72%
4 stars12%12%
3 stars9%9%
2 stars3%3%
1 star4%4%

Customer feedback describes the ruler as easy to use and helpful for finding a flange size, with reported benefits including comfort and more efficient pumping. These are customer perceptions, not confirmation that the inserts fit every pump. The five insert sizes are most relevant to buyers whose equipment uses a compatible 24mm flange.

Positive themes

Customers describe the ruler as easy to use and useful for flange sizing.
Feedback mentions comfort, fit and perceived value.

Frequently asked questions

What sizes are included?

The listing specifies inserts in 13mm, 15mm, 17mm, 19mm and 21mm, with two of each size.

Which pump flanges are these designed for?

The listing says they are suitable for 24mm flanges or shields on most pumps. It does not confirm fit for every pump model, so check your specific equipment.

How does the ruler work?

The listing suggests measuring each nipple separately and describes aligning the ruler with the nipple edge or using the largest circle that fits comfortably. It recommends remeasuring and adjusting flange size regularly.