These are the charging caps usually found on the POA valve
or liquid line on 67-73 Cutlass', Chevelles, Corvettes, Camaros.
They are 1/4" and I media-blasted and clear-coated them. I also
installed new orings to seal them up on your charging port.
Not all caps are identical and the price is for [ 1 ] cap only although
3 are pictured. I may 1,2, 3 or more, so check my quantity at purchase time.
The high side may also be 1/4" for these older muscle cars.
90 day warranty.