approx 3mm.... what is actual size?

The actual size is 3mm inside diameter and 4mm outside diameter. I think the reason they say "approximately 3mm", is because there will always be a (very) slight difference in the measurements on paper and in reality. Other than that, measurements are very accurate and the product so far has nice quality.

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2 Pieces 304 Stainless Steel Capillary Metal Tube Tubing OD x ID, 4 x 3 mm Length 250 mm

Product ID: 511946509

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Details

Brand
Eowpower
Material
Metal Steel
Colour
Stainless
Product dimensions
25L x 0.4W
Item weight
0.02 Kilograms
Nominal wall thickness
1 millimeters

📏Lengthy 250 mm tubes

⚙️Durable 304 stainless steel

🛠️Precision 4x3 mm OD/ID

Description

⚙️ Elevate your projects with precision stainless steel tubes that mean business!

BUILT TO LAST - Premium 304 stainless steel resists corrosion and oxidation, ensuring longevity
COMPACT YET MIGHTY - Slim 250 mm length fits seamlessly into tight, professional setups
DUAL PACK ADVANTAGE - Two tubes included for versatile applications or backup readiness
EFFORTLESS MAINTENANCE - Smooth surface allows quick and easy cleaning, keeping performance optimal
ENGINEERED FOR PRECISION - Exact 4 mm outer and 3 mm inner diameter for flawless fit and flow

The Eowpower 2-piece set features 250 mm long, 4 mm outer diameter and 3 mm inner diameter capillary tubes crafted from corrosion-resistant 304 stainless steel. Designed for durability and precision, these tubes are ideal for professional-grade applications requiring reliable, easy-to-clean metal tubing.

Specifications

Manufacturer	Eowpower
Part number	02-001-029
Item Weight	18 g
Product Dimensions	24.99 x 0.41 x 0.1 cm; 18 g
Item model number	02-001-029
Colour	Stainless Steel
Material	Metal, Stainless Steel
Item Package Quantity	2
Measurement System	Metric
Batteries included?	No
Batteries Required?	No

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