Ferrule Tube for #8 ID- .291 OD- .360, Ferrule Tube for #10 ID- .305 OD- .375, Ferrule Tube for 1/4" ID- .380 OD- .500, Ferrule Tube for 5/16" ID- .445 OD- .562, Ferrule Tube for 3/8" ID- .505 OD- .625, Ferrule Tube for 1/2" ID- .650 OD- .750, Ferrule Tube for 5/8" ID- .785 OD- .906