JOROYJOROY 3/8 High Flow Air Hose Fittings, Industrial M-Type Plug, 3/8 Inch High Flow Size, 1/4 Inch Male Threads Size, Steel Material, 300PSI, 10 Pieces Air Compressor Accessories

Not sure I can say much other than they work fine.

Good quallity

I have bought in the past some 1/4" mnpt thread types air fittings and couplers for my Garage/shop air system. And I've been looking for 1/4" MNPT thread type fittings with better/more air flow. I DID A LOT OF RESEARCH!!!!, I found this company and these are perfect its a 3/8" body type but with a 1/4" MNPT THREADS, and the holes from a reg 1/4" fitting/plug/coupler. Is absolutely bigger. And i gave them a 5 STARS because I definitely felt and heard the difference in power & speed of my Air pneumatic tools, these Fittings /Male Plugs are steel, and will not damage like brass fittings. I did not want to redo my whole shop piping. It's all 1/2" & 3/4" Type "M" copper pipes with 3/8" air hosesSo if you want better air flow, these are the fittings you need.!

A little tight fitting

I only needed one of these for an oil/water separator for my air compressor but the big box stores charge almost as much for one of these as this pack. I may turn around and just sell the extra ones that I don't need. The quality of this fitting seems to be just as good as any compressor fitting that I've ever used. When connected to my compressor, there are no noticeable leaks. I'm using this fitting in combination with a Merlin 3/8 intermediate air filter, it works great!

Was the actual size listed. A few others have not been.

I upgraded all my garage shop air tools to high flow 3/8” fittings.. these work great and don’t leak at all.

I only received one box of 10.