---
title: "Insulin Needles 4mm — £121K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/business-industry-science/insulin-needles-4mm"
last_updated: "2026-07-31T11:37:04.662Z"
locale: en
meta:
description: "Niche score 60/100 · £121K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 60/100 · £121K/yr market. A failed launch gate (market size, growth, or returns) keeps it on the watch list. Data updated Jul 2026."
"og:title": "Insulin Needles 4mm — £121K/yr Amazon UK Niche (2026) - Flapen"
---
# **insulin needles 4mm**
**Worth a look**
Shows low returns (0.1%), but a failed launch gate (market size, growth, or returns) keeps it on the watch list.
Market size 28Growth 31Conversion 70Competition 85Returns 99Price range 36Avg price 37Brand share 93Review moat 98Quality gap 35
**Returns**
**Incredible****0.1%**
return rate — above 5% kills the launch gate
**Review moat**
**Incredible****46.07**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Great****42%**
top-5 brand share — no brand owns this niche
**Competition**
**Great****30%**
top-5 click share — an open shelf
**Conversion**
**Good****6.4%**
search→purchase rate — share of searches ending in a sale
**Avg price**
**Okay****£10.49**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****£4.00–£21.10**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Okay****4.5★**
avg incumbent rating — lower means beatable quality
**Growth**
**Okay****+5.1%**
90-day search growth — must beat 0% to launch
**Market size**
**Okay****£121K**
£121K/yr · 179K searches
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=uk&signal=no_dominant_brand "Top brand's click share < 20%") [** Low Review Barrier**](https://flapen.com/research/niches?market=uk&signal=low_review_barrier "Top brand's reviews < 500")
According to Flapen's Amazon United Kingdom niche tracking, insulin needles 4mm is a £121K/yr Amazon United Kingdom market (179K searches/yr). The top 5 brands hold 42% of demand. Demand peaks in Apr–May–Jun. Verdict: Worth a look — 60/100.
Data updated Jul 21, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **insulin needles 4mm market data**
- **Units sold / yr**
- **8K–10K**
- avg 100–250/product
- **Revenue / yr**
- **£84K–£105K**
- units × avg price
- **Conversion rate**
- **6.4%**
- **Avg BSR**
- **#117**
- **Page quality**
- **0%**
- **Prime**
- **93%**
- **Sponsored**
- **72%**
- **Out of stock**
- **5.2%**
- **Avg brand age**
- **18 months**
- **Avg seller age**
- **199 days**
## **Competition & brand share**
Clicks spread well past the top 5 (30% combined) — an open shelf where new products get seen.
**Brands**
**30 **▲rising
**Sellers**
**39**
**Top-5 brand share**
**42%**
Top 20: 89%
**Top-5 click share**
**30%**
Top 20: 67%
**Open market**
**53%**
- JIBENGAO12% - Robust Strength11% - Atsuhut7% - Axonora6% - VitaLyric6% - Tiezeeu4%
## **Demand & seasonality**
Weekly Amazon search volume, last 67 weeks — +5.1% search growth over the last 90 days.
4K3KSpike '25Spike '26Prime Day '26 seasonAprMayJunJulAugSepOctNovDecJanFebMarAprMayJun
Peak months: Apr, May, Jun · busiest ÷ quietest = 3.2×
[**Open Trend **](https://flapen.com/research/uk/business-industry-science/insulin-needles-4mm/trend)
## **Top insulin needles 4mm search terms**
- **4mm insulin needles**44K/yr+36.2%2.9% conv. - **6mm insulin needles**12K/yr+6.9%5.8% conv. - **32g needle**14K/yr+3.2%3.5% conv. - **insulin syringes with needle 4mm**14K/yr-1.3%3.7% conv. - **32g 4mm needles**15K/yr-22.3%4.8% conv. - **4mm needles for injections**7K/yr+15.7%2.7% conv. - **insulin needles 4mm**9K/yr+19.8%2.3% conv. - **novofine 31g 6mm**8K/yr+28.8%2.7% conv. - **6mm needles injection monjaro**8K/yr-6.2%2.4% conv. - **31g 6mm insulin needles**5K/yr+58.0%7.3% conv. [**All search terms **](https://flapen.com/research/uk/business-industry-science/insulin-needles-4mm/search-terms)
## **Top insulin needles 4mm 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%3%£4K6%£7K9%£11K12%£15K1101001K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Precision Dispensing Tips Fine Micro Applicator Tips Size 31-4 length Clean Packed Universal Connector For Beauty Resin Adhesives Ink Craft & Laboratory Liquid Transfer 100 Pack.**Robust Strength**£13.88**4.8★24 rev](https://www.amazon.co.uk/dp/B0GJD1YYMN) [2**Plastic Multi Purpose Measuring Tools 1ml/cc 32G 6mm Individually Packed (10)**JIBENGAO**£5.44**4.4★128 rev](https://www.amazon.co.uk/dp/B0DZ2F1HWK) [3**1ml 31G 6mm Multiple Uses Distribution Measuring Tools Individually Packed Multiple Uses Precision Lab Accessories (10)**VitaLyric**£4.54**3.9★7 rev](https://www.amazon.co.uk/dp/B0GD75BT6P) [4**100 PCS New Update 4MM 32G Replaceable Stainless Pipette Tips Accessories Individually Sealed for Refilling Liquid Inks Livestock**Tiezeeu**£12.27**5.0★5 rev](https://www.amazon.co.uk/dp/B0GSVTLC69) [5**32G 4MM Stainless Steel Dispensing Accessories Scientific Measuring and Industrial Use Individually Packed(100 PCS)**Knixxo**£14.25**4.4★25 rev](https://www.amazon.co.uk/dp/B0FP2B2TSP)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Pen Tips - Measuring Tool 32/4 - Pack of 100 With Protective Film - Clean Packed Universal Connector - Laboratory Beauty and Cosmetic Production**Generic**£18.78**5 rev2mo ago](https://www.amazon.co.uk/dp/B0H2HWP19L) [**100 pcs 32G 4MM Stainless Steel Dispensing Accessories Luer Lock Industrial Accessories Lab Supplies Individually Packed for Scientific Measuring Refilling Liquid**VitaJect**£13.95**5 rev3mo ago](https://www.amazon.co.uk/dp/B0GY317TY6) [**20-Pack Clear Plastic Transfer Tools 1ml Multiple Uses Distribution Measuring Tools(6mm Long) Individually Packaged for Measuring Liquids (20)**Atsuhut**£7.43**1 rev3mo ago](https://www.amazon.co.uk/dp/B0GVS4KV4Q) [**100-Pack Clear Plastic Transfer Tools 1ml Multiple Uses Distribution Measuring Tools(6mm Long) Individually Packaged for Measuring Liquids (100)**Atsuhut**£19.43**1 rev3mo ago](https://www.amazon.co.uk/dp/B0GVSG1CWG) [**Pack of 10Pcs Multiple Uses Transfer Tools with Cap 1ml Plastic Measuring Tools(31g 6mm) Individually Packaged for Lab DIY Crafts (10)**Aleriom**£5.23**4 rev3mo ago](https://www.amazon.co.uk/dp/B0GRJ8P253)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**20-Pack Clear Plastic Transfer Tools 1ml Multiple Uses Distribution Measuring Tools(6mm Long) Individually Packaged for Measuring Liquids (20)**Atsuhut**£7.43**5.0★**▲ 112%**](https://www.amazon.co.uk/dp/B0GVS4KV4Q) [**Pack of 10Pcs Multiple Uses Transfer Tools with Cap 1ml Plastic Measuring Tools(31g 6mm) Individually Packaged for Lab DIY Crafts (10)**Aleriom**£5.23**5.0★**▲ 112%**](https://www.amazon.co.uk/dp/B0GRJ8P253) [**100 pcs 32G 4MM Stainless Steel Dispensing Accessories Luer Lock Industrial Accessories Lab Supplies Individually Packed for Scientific Measuring Refilling Liquid**VitaJect**£13.95**3.2★**▲ 111%**](https://www.amazon.co.uk/dp/B0GY317TY6) [**100 PCS New Update 4MM 32G Replaceable Stainless Pipette Tips Accessories Individually Sealed for Refilling Liquid Inks Livestock**Tiezeeu**£12.27**5.0★**▲ 111%**](https://www.amazon.co.uk/dp/B0GSVTLC69) [**Pen Tips - Measuring Tool 32/4 - Pack of 100 With Protective Film - Clean Packed Universal Connector - Laboratory Beauty and Cosmetic Production**Generic**£18.78**5.0★**▲ 110%**](https://www.amazon.co.uk/dp/B0H2HWP19L)
**~~View all trending →~~**
## **What buyers say about insulin needles 4mm**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**25%
*“Great quality excellent VFM”*
**Advertised Vs Actual Product**22%
*“Exactly as advertised”*
**Value For Money**19%
*“Good value for money”*
**Ease Of Use**8%
*“Easy to use”*
**Dosage**6%
*“Golden Dose Perfect”*
**Size-Overall**3%
*“accurately sized”*
**Efficiency**3%
*“very effective”*
**Sharpness**2%
*“They needles are strong and perfect sharpness”*
**Blood Sugar Level**1%
*“Great insulin needles”*
**Dispensing Mechanism**1%
*“so you get good control when dispensing”*
### **What buyers complain about **
**Size-Overall**16%
*“Is to tiny”*
**Sharpness**12%
*“Not sharp”*
**Advertised Vs Actual Product**10%
*“Not like the photos show at all”*
**Strength**7%
*“Flimsy”*
**Flexibility**5%
*“kept bending when trying to inject”*
**Value For Money**5%
*“as medication is so expensive”*
**Durability**4%
*“Blunt needles”*
**Quality-Overall**4%
*“Definitely not as good a quality as the syringes used when working for the NHS”*
**Skin Health**4%
*“1 even broke off in the skin”*
**Thickness**4%
*“Very thin needles”*
### **Top return reasons **
**Size-Overall**61%
**Compatibility-Overall**10%
**Advertised Vs Actual Product**8%
**Functionality-Overall**3%
**Quality-Overall**3%
**Add-Ons/Attachments**1%
**Leak-Proof**1%
**Dosage**1%
**Contamination**1%
**Sharpness**1%
## **Common questions**
- **Is insulin needles 4mm profitable to sell on Amazon United Kingdom?**
- The niche generates £121K/yr across 54 tracked products. 8 of 43 products launched in the last 360 days are still selling. 90-day search growth is +5.1%. Flapen's verdict: Worth a look (60/100).
- **How competitive is the insulin needles 4mm niche?**
- 30 brands and 39 sellers compete. The top 5 products take 30% of clicks and top 5 brands hold 42% of demand.
- **What do buyers complain about in insulin needles 4mm?**
- Top complaints mined from reviews: Size-Overall, Sharpness, Advertised Vs Actual Product. The return rate is 0.1%.
- **When does demand for insulin needles 4mm peak?**
- Demand peaks in Apr–May–Jun; the busiest month runs 3.2× the quietest.
- **What does it cost to enter the insulin needles 4mm niche?**
- Listings span £4.00–£21.10; the average listing price is £10.49 (sweet spot $15–$100). The average incumbent carries 46 reviews — the moat a new listing must climb.
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