HOSE INSIDE DIAMETER: 1/4 INCH, FERRULE INSIDE DIAMETER: 0.525 INCH, HOLE DIAMETER: 0.406 INCH, HOSE OD: 1/2 INCH, SOLD BY THE PACKAGE,5 PER PACKAGE, CRIMPS AIR HOSE TO HOSE BARBS TO FORM A PERMANENT HOSE ASSEMBLY, DIMS: 11/16" LONG X 9/16" DIA, WEIGHT: 1 OZ, COUNTRY OF ORIGIN: CHINA