---
title: "Flange Measurement Tool — $1000K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/baby-products/flange-measurement-tool"
last_updated: "2026-08-09T11:51:36.957Z"
locale: en
meta:
description: "Niche score 37/100 · $1000K/yr market · 1.2M searches/yr · $8.80 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 37/100 · $1000K/yr market · 1.2M searches/yr · $8.80 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Flange Measurement Tool — $1000K/yr Amazon US Niche (2026) - Flapen"
---
# **flange measurement tool**
**Skip it**
Brand-locked demand (top 5 brands take 100% of clicks) — this niche doesn't clear our bar today.
Market size 78Growth 23Conversion 85Competition 8Returns 47Price range 0Avg price 24Brand share 0Review moat 47Quality gap 37
**Conversion**
**Great****9.5%**
search→purchase rate — share of searches ending in a sale
**Market size**
**Great****$1000K**
$1000K/yr · 1.2M searches
**Review moat**
**Okay****1,791.5**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Okay****3.2%**
return rate — above 5% kills the launch gate
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Avg price**
**Bad****$8.80**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-3.3%**
90-day search growth — must beat 0% to launch
**Competition**
**Bad****91%**
top-5 click share — a locked-up shelf
**Brand share**
**Bad****100%**
top-5 brand share — brand-locked demand
**Price range**
**Bad****$5.68–$10.05**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, flange measurement tool is a $1000K/yr Amazon United States market (1.2M searches/yr). The top 5 brands hold 100% of demand. Demand peaks in Apr–May–Jun. Verdict: Skip it — 37/100.
Data updated Jul 12, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **flange measurement tool market data**
- **Units sold / yr**
- **100K–125K**
- avg 15,000–20,000/product
- **Revenue / yr**
- **$880K–$1.1M**
- units × avg price
- **Conversion rate**
- **9.5%**
- **Avg BSR**
- **#34**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **88%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **42 months**
- **Avg seller age**
- **147 days**
## **Competition & brand share**
The top 5 products capture 91% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**5 **▲rising
**Sellers**
**10**
**Top-5 brand share**
**100%**
Top 20: 100%
**Top-5 click share**
**91%**
Top 20: 100%
**Open market**
**0%**
- Nuliie45% - Nursi Luna44% - LOTBILL5% - Momcozy4% - GOCROWEEN3%
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — -3.3% search growth over the last 90 days.
25K15KPrime Day '24Spike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Apr, May, Jun · busiest ÷ quietest = 3.3×
[**Open Trend **](https://flapen.com/research/us/baby-products/flange-measurement-tool/trend)
## **Top flange measurement tool search terms**
- **flange sizing kit**376K/yr+5.4%11.2% conv. - **flange inserts**135K/yr+67.7%7.2% conv. - **spectra flange inserts**106K/yr-13.0%9.2% conv. - **flange inserts for spectra**147K/yr-35.4%10.2% conv. - **breast pump flange insert**72K/yr-15.8%9.1% conv. - **flanges for breast pump**46K/yr-26.5%5.1% conv. - **nipple flange sizing kit**33K/yr-0.3%11.1% conv. - **flange sizing kit spectra**30K/yr-5.5%10.7% conv. - **silicone flange insert**30K/yr-20.5%6.0% conv. - **spectra s1 flange inserts**17K/yr+24.4%6.8% conv. [**All search terms **](https://flapen.com/research/us/baby-products/flange-measurement-tool/search-terms)
## **Top flange measurement tool products on Amazon**
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
0%15%$150K30%$300K45%$450K60%$600K1001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 8 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Essential for Moms**Nuliie**$9.68**4.6★4,179 rev](https://www.amazon.com/dp/B0CMPBBHMZ) [2**Nursi Luna Flange Sizing Kit 3-in-1 with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields 10PCS Soft Silicone Flange Inserts for More Comfortable Pumping BPA-Free Essential for Moms**Nursi Luna**$9.87**4.6★2,081 rev](https://www.amazon.com/dp/B0CY81WHD5) [3**Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms**Nursi Luna**$10.05**4.6★2,006 rev](https://www.amazon.com/dp/B0CKZH37FX) [4**Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Electric Breast Pump 24mm Flange/Shield Reduce 24mm Tunnel Down to Correct Size**LOTBILL**$7.34**4.6★583 rev](https://www.amazon.com/dp/B0CL96VP1C) [5**Momcozy Nipple Ruler for Flange Sizing Soft & Flexible Silicone Measurement Tool for Breast Pump Sizing Compatible with Momcozy Medela Spectra Lansinoh Easy to Use for Comfortable Pumping**Momcozy**$5.68**4.3★2,611 rev](https://www.amazon.com/dp/B0CBT9ZJ9T)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Nuliie 5-in-1 Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Pump Essential for Moms**Nuliie**$9.90**445 rev5mo ago](https://www.amazon.com/dp/B0GJRV3N1Q) [**Nursi Luna Flange Sizing Kit with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields 10PCS Soft Silicone Flange Inserts for Enhanced Pumping Comfort BPA-Free Pump Essential for Moms**Nursi Luna**$9.86**381 rev1y ago](https://www.amazon.com/dp/B0DT3QZ6Q2) [**Nursi Luna Flange Sizing Kit 3-in-1 with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields 10PCS Soft Silicone Flange Inserts for More Comfortable Pumping BPA-Free Essential for Moms**Nursi Luna**$9.87**2,081 rev2y ago](https://www.amazon.com/dp/B0CY81WHD5) [**Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms**Nursi Luna**$10.05**2,006 rev2y ago](https://www.amazon.com/dp/B0CKZH37FX) [**Nuliie 3-in-1 Flange Sizing Kit 13/15/17/19/21mm for 24mm Electric Double Breast Pump Flange/Shield 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Essential for Moms**Nuliie**$9.68**4,179 rev2y ago](https://www.amazon.com/dp/B0CMPBBHMZ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**Nuliie 5-in-1 Flange Sizing Kit 12/14/16/18/20mm for 24mm Flange/Shield of Most Pumps 10PCS Silicone Flange Inserts to Boost Pumping Efficiency & Comfort BPA-Free Pump Essential for Moms**Nuliie**$9.90**4.5★**▲ 266%**](https://www.amazon.com/dp/B0GJRV3N1Q) [**Nursi Luna Flange Inserts 10PCS 13/15/17/19/21mm for 24mm Flanges/Shield of Most Pumps Flange Sizing Kit Silicone Flanges Insert Breastfeeding Essentials Kit for New Moms**Nursi Luna**$10.05**4.6★**▲ 59%**](https://www.amazon.com/dp/B0CKZH37FX) [**Momcozy Nipple Ruler for Flange Sizing Soft & Flexible Silicone Measurement Tool for Breast Pump Sizing Compatible with Momcozy Medela Spectra Lansinoh Easy to Use for Comfortable Pumping**Momcozy**$5.68**4.3★**▲ 25%**](https://www.amazon.com/dp/B0CBT9ZJ9T) [**Flange Insert 13/15/17/19/21mm 10PCS Compatible with Momcozy S12 Pro/S9 Pro/S12/S9/Medela/Spectra etc Electric Breast Pump 24mm Flange/Shield Reduce 24mm Tunnel Down to Correct Size**LOTBILL**$7.34**4.6★**▲ 12%**](https://www.amazon.com/dp/B0CL96VP1C) [**Nursi Luna Flange Sizing Kit 3-in-1 with 13/15/17/19/21mm for 24mm Electric Breast Pump Flanges/Shields 10PCS Soft Silicone Flange Inserts for More Comfortable Pumping BPA-Free Essential for Moms**Nursi Luna**$9.87**4.6★**— 10%**](https://www.amazon.com/dp/B0CY81WHD5)
**~~View all trending →~~**
## **What buyers say about flange measurement tool**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**31%
*“Like the sizer”*
**Quality-Overall**13%
*“One thing that really stood out to me was how well-made”*
**Ease Of Use**11%
*“This made it so easy for me”*
**Value For Money**9%
*“Good price”*
**Comfort-Overall**8%
*“So comfortable”*
**Ease Of Cleaning**5%
*“The little cleaning sponge is wonderful”*
**Advertised Vs Actual Product**5%
*“Exactly What I Needed”*
**Breastfeeding Friendly**4%
*“Very helpful and useful for breastfeeding”*
**Compatibility-Overall**3%
*“Compatible with Frida Mom manual pump”*
**Durability**3%
*“durable”*
### **What buyers complain about **
**Size-Overall**31%
*“Does NOT fit”*
**Quality-Overall**7%
*“Poor quality”*
**Ease Of Cleaning**5%
*“they are kind of a pain to insert and clean and the output isnt as good as just using the correct size pump accessory”*
**Compatibility-Overall**5%
*“Incompatible with Elvie Stride”*
**Durability**5%
*“one of the flange inserts tore right apart immediately after opening”*
**Comfort-Overall**5%
*“Very uncomfortable”*
**Value For Money**4%
*“Waste of money”*
**Material Quality**3%
*“These are different the last time I bought them I dont like the material”*
**Ease Of Use**3%
*“its a little awkward to handle at first”*
**Adhesion/Stickiness**2%
*“Too sticky; nipple can move”*
### **Top return reasons **
**Size-Overall**54%
**Functionality-Overall**9%
**Advertised Vs Actual Product**8%
**Defective Material/Parts**5%
**Material Quality**4%
**Comfort-Overall**3%
**Breastfeeding Friendly**3%
**Value For Money**3%
**Compatibility-Overall**2%
**Quality-Overall**2%
## **Common questions**
- **Is flange measurement tool profitable to sell on Amazon United States?**
- The niche generates $1000K/yr across 8 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is -3.3%. Flapen's verdict: Skip it (37/100).
- **How competitive is the flange measurement tool niche?**
- 5 brands and 10 sellers compete. The top 5 products take 91% of clicks and top 5 brands hold 100% of demand.
- **What do buyers complain about in flange measurement tool?**
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Ease Of Cleaning. The return rate is 3.2%.
- **When does demand for flange measurement tool peak?**
- Demand peaks in Apr–May–Jun; the busiest month runs 3.3× the quietest.
- **What does it cost to enter the flange measurement tool niche?**
- Listings span $5.68–$10.05; the average listing price is $8.80 (sweet spot $15–$100). The average incumbent carries 1,792 reviews — the moat a new listing must climb.
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