Copper Hard Type L Gas Tube, 4 in x 20 ft

Type L ACR/OXY/MED Gas Tube, 4 in Nominal, 4-1/8 in OD, 3.905 in ID, 20 ft Length, 0.11 in Wall Thickness, Copper, ASTM B819, Hard (Drawn), Color Code: Blue, Cross Sectional Area of Bore: 12 sq-in