Nnukwu mgbali elu Afk nwa nwoke na-ese okwu
Bt alaka
| Nkebi nke Mba | P npt | Akụkụ (mm) | ||||
| L | S | E | F | |||
| Inch | mm | |||||
| Bt-02n | 1/8 | 26.4 | 22.1 | 4.8 | 1/2 | 12.70 |
| BT-04n | 1/4 | 29.7 | 29.7 | 7.1 | 11/16 | 17.46 |
| BT-06N | 3/8 | 36.1 | 32.0 | 9.6 | 13/16 | 20.63 |
| Bt-08n | 1/2 | 39.6 | 39.6 | 11.9 | 1 | 25.40 |
Dee ozi gị ebe a ma zigara anyị ya
