R12 or 22 has 1/4" flare x 1/2" ACME
This 11-12 inch R-12 hose is used to charge A/C units. One end connects to the low-side service port and the other end to the refrigerant can tap. Used with MC 85510 or Pittstop Blue Handled Top Tap.
Also: R-22 & R- 502
*NOTE, hose may differ in color from picture.