| Type | a | b | c | d | e | holes | aperture(Φ) |
| EI- 28 | 28 | 4 | 6 | 8 | 17 | ||
| EI-35 | 35 | 5 | 7.5 | 10 | 19.5 | ||
| EI-41 | 41 | 6 | 8 | 13 | 21 | ||
|
EI-42 |
42 | 7 | 7 | 7 | 14 | ||
| EI-48 | 48 | 8 | 8 | 16 | 24 | ||
| EI-50 | 50 | 8 | 9 | 16 | 25.5 | ||
|
EI-57 |
57 | 9.5 | 9.5 | 19 | 28.5 | 4 | 4 |
| EI-60 | 60 | 10 | 10 | 20 | 30 | 4 | 5 |
| EI-66 | 66 | 11 | 11 | 22 | 33 | 4 | 4 |
| EI-76.2 | 76.2 | 12.7 | 12.7 | 25.4 | 38.1 | 4 | 5 |
| EI-78 | 78 | 13 | 13 | 26 | 39 | 4 | 5 |
| EI-84 | 84 | 14 | 14 | 28 | 41 | 4 | 6 |
| EI-85.8 | 85.8 | 14.3 | 14.3 | 28.6 | 42.9 | 4 | 5 |
| EI-96 | 96 | 16 | 16 | 32 | 48 | 4 | 6 |
| EI-105 | 105 | 17.5 | 17.5 | 35 | 52.5 | 4 | 6 |
| EI-108 | 108 | 18 | 18 | 36 | 54 | 4 | 5.5 |
| EI-114 | 114 | 19 | 19 | 38 | 57 | 4 | 6 |
| EI-120 | 120 | 20 | 20 | 40 | 60 | 4 | 7 |
| EI-133.2 | 133.2 | 22.2 | 22.2 | 44.4 | 66.6 | 4 | 7 |
| EI-150 | 150 | 25 | 25 | 50 | 75 | 4 | 8 |
| EI-152.4 | 152.4 | 25.4 | 25.4 | 50.8 | 76.2 | 4 | 8 |
| EI-162 | 162 | 27 | 27 | 54 | 81 | 4 | 10 |
| EI-168 | 168 | 28 | 28 | 50 | 84 | 4 | 10 |
| EI-171 | 171 | 28.5 | 28.5 | 57 | 85.5 | 4 | 10 |
| EI-180 | 180 | 30 | 30 | 60 | 90 | 4 | 10 |
| EI-192 | 192 | 32 | 32 | 64 | 96 | 4 | 10 |
| EI-270 | 270 | 45 | 45 | 90 | 135 | 4 | 12 |
| EI-228 | 228 | 38 | 38 | 76 | 114 | 4 | 10 |
| EI-300 | 300 | 50 | 50 | 100 | 150 | 4 | 12 |
| EI-360 | 360 | 60 | 60 | 120 | 180 | 4 | 12 |
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