| Qauv | Lub zog tig(Nm) | Khoom siv |
| Qauv A | 0.5/0.7/1.0/1.5 | Hlau |
| Qauv B | 0.3/0.4 | Hlau tsis xeb |
| Qauv C | 0.3/0.5/0.7 | Hlau tsis xeb |
| Qauv D | 1.0 | Hlau tsis xeb |
Cov pob qhov rooj torque zoo meej rau kev kho lub kaum sab xis hauv cov tshuab npog, cov zaub, thiab cov khoom siv teeb pom kev zoo. Lawv pabcuam ntau yam kev siv thoob plaws hauv kev lag luam, suav nrog cov khoom siv kho mob, cov tshuab kev lag luam, kev thauj mus los, thiab cov khoom siv ua zaub mov.