French Catheter DataCatheter Sizes Diameter Inches Diameter MM 3 .039 1 4 .053 1.35 5 .066 1.67 6 .079 2.0 7 .92 2.3 8 .105 2.7 9 .118 3.0 10 .131 3.3 11 .144 3.7 12 .158 4.0 13 .170 4.3 14 .184 4.7 15 .197 5.0 16 .210 5.3 17 .223 5.7 18 .236 6.0 19 .249 6.3 20 .263 6.7 22 .288 7.3 24 .315 8.0 26 .341 8.7 28 .367 9.3 30 .393 10.0 32 .419 10.7 34 .445 11.3 |