Stainless Steel Cannula
Parameter

SIZE OUTER DIAMETER INNER DIAMETER
GAUGE NOMINAL MIN MAX REGULAR WALL THIN WALL EXTRA THIN WALL
MIN MIN MIN
30 0.30 0.298 0.320 0.133 0.165  
29 0.33 0.324 0.351 0.133 0.190  
28 0.36 0.349 0.370 0.133 0.190  
27 0.40 0.400 0.420 0.184 0.241  
26 0.45 0.440 0.470 0.232 0.292  
25 0.50 0.500 0.530 0.232 0.292  
24 0.55 0.550 0.580 0.280 0.343  
23 0.60 0.600 0.650 0.317 0.370 0.460
22 0.70 0.698 0.730 0.390 0.440 0.522
21 0.80 0.800 0.830 0.490 0.547 0.610
20 0.90 0.860 1.920 0.560 0.635 0.687
19 1.10 1.030 1.100 0.648 0.750 0.850
18 1.20 1.200 1.300 0.790 0.910 1.041
17 1.40 1.400 1.510 0.950 1.156 1.244
16 1.60 1.600 1.690 1.100 1.283 1.390
15 1.80 1.750 1.900 1.300 1.460 1.560
14 2.10 1.950 2.150 1.500 1.600 1.727
13 2.40 2.300 2.500 1.700 1.956  
12 2.70 2.650 2.850 1.950 2.235  
11 3.00 2.950 3.150 2.200 2.464  
10 3.40 3.300 3.500 2.500 2.819