Quickun Copper Tube 3/16" ID × 1/4" OD (5-6.35mm) Seamless Round Pipe Tubing (3.28FT)

Bought to fix line on motorcycle that needed to be bent 180 degrees.worked well.

price and delivery

Good product. Good service.

It is copper tube.

Unfortunately I waited too long starting this project and I'm past the point of returning. This wasted my valuable time and money because the dimensions are incorrect.I have two flaring tool sets that work fine with every other copper tubing I've purchased... this one being the exception.The OD of this pipe is undersized by at least 25 thousands (of an inch) depending on where you measure. Neither of my flaring tools can clamp down tight enough to get an acceptable flare, the tubing pushes right through the clamp.One of the flaring tools I purchased is brand new from the hardware store. Both tools work just fine with the older 1/2" OD copper I have here, which is .500 (half an inch on the money, +/ - .005.) That's what it's supposed to be. This tubing is .465 to .475. And NO, I am not measuring areas that were bent. The whole lenght of material is like that.I'm really disappointed and PO'd. I wasted a lot of time trying to make this work. I guess the manufacturer cheaped out and made this tubing smaller than it should be. Maybe the section I got was defective. It would be great if the seller reached out and decided to make things right. If they do, I will happily update this review.

Was exactly what I ordered

Allowed me to keep a vintage compressor running! Used bending springs to shape tubing.

This tubing is metric and not 3/8" nor 1/2". This will not work with standard U.S. dimension fittings. The outside diameter is 12.0mm. A 1/2" tube would be 12.7mm. This difference is just enough to make it unusable. The quality was fine otherwise.