Interstate Pneumatics F5029A-12 0.900 inch Inner diameter x 0.875 inch brass hose Ferrules for 1/2 inch hose 500 psi 12 per pack Length: 0.875 Inch | I.D: 0.900 Inch 12 per pack Hole: 0.687 Inch Wall Thickness: 0.025 Inch Material: C46500 Brass