Tube	Outside diameter	Wall thickness
Size	inch	mm	BWG	inch	mm
"1/4 "	"         "	0.250	6.350	22	0.028	0.711
			24	0.022	0.559
"3/8 "	""	0.375	9.525	18	0.049	1.245
			20	0.035	0.889
			22	0.028	0.711
"1/2 "	""	0.5	12.7	18	0.049	1.245
			20	0.035	0.889
"5/8 "	""	0.625	15.875	16	0.065	1.651
			18	0.049	1.245
			20	0.035	0.889
"3/4 "	""	0.75	19.05	12	0.109	2.769
			14	0.083	2.108
			16	0.065	1.651
			18	0.049	1.245
			20	0.035	0.889
"7/8 "	""	0.875	22.225	14	0.083	2.108
			16	0.065	1.651
			18	0.049	1.245
			20	0.035	0.889
"1 "	""	1	25.4	12	0.109	2.769
			14	0.083	2.108
			16	0.065	1.651
			18	0.049	1.245
"1 1/4 "	""	1.25	31.75	10	0.134	3.404
			12	0.109	2.769
			14	0.083	2.108
			16	0.065	1.651
"2 "	""	2	50.8	12	0.109	2.769
			14	0.083	2.108