sizeI.DO.D.line layerW.P.(psi)B.P.standard lengthnet weightmeasurement3/16''511.51200800100300.0481/4''613.01200800100360.0555/16''8151200800100440.063/8''10171200800100480.0791/4''+3/8''6+1013+171200800100420.0625/16''+3/8''8+1015+171200800100460.077 Twin Line Welding rubber Hoses (Oxygen and Acetylene) Please feel free to contact us for more details. Trademanager: cn204109000 Yours' faithfully, alana