Igwe anaghị agba nchara nkenke nkedo/njikọ nkedo itinye ego
| Nha | Inch | Dayameta | Ọkpụrụkpụ | Ogologo |
| DN6 | 1/8" | 13 | 2 | 24 |
| DN8 | 1/4" | 16 | 2 | 25 |
| DN10 | 3/8" | 20.5 | 2.5 | 25 |
| DN15 | 1/2" | 24 | 2.5 | 27 |
| DN20 | 3/4" | 30 | 3 | 30 |
| DN25 | 1" | 37 | 3 | 32 |
| DN32 | 11/4" | 45 | 3 | 34 |
| DN40 | 11/2" | 51 | 3 | 37 |
| DN50 | 2" | 63.5 | 3.5 | 44 |
| DNA65 | 21/2" | 81 | 4 | 48 |
| DN80 | 3" | 93 | 4-4.5 | 50 |
| DN100 | 4" | 120 | 5 | 60 |
