Grex AD12 Adapter, 1/8-Inch Male End to 1/4-Inch Female End

• Grex adaptor
• One end with 1/8 inches male threads
• Other end with 1/4 inches female threads
• Precision machined of metal for durability
• Electro-plated for a smooth easy to clean surface

I bought this thinking it was 1/4" NPT on the one end for using with a compressor, but its not. It's not pipe thread. Grex doesn't seem to make one. At least not 1/4" female. The description should be more specific. I gave it 2 stars because quality seems to be okay otherwise.