NTA:
1. Peb lub tshuab dov tsis yog tsuas yog reels xwb tab sis kuj tuaj yeem ua cov ntaub ntawv
2. Peb lub tshuab dov dov tuaj yeem dov cov hlau puag ncig uas nws cov lus qhia yog φ 6, φ 8, φ 10 thiab lwm yam.
3. Lub axis sab saud ntawm peb lub tshuab dov tuaj yeem rub tawm tau yooj yim kom tshem tawm cov haujlwm ua tiav.
COV LUS QHIA:
| QAUV | MAX.TUAB | Qhov dav tshaj plaws | DIA.OF ROLL | Qhov Loj Ntawm Cov Khoom | NW/GW |
| SJ320 | 1.0 | 320 | 32 | 48x22x19 | 13/14.5 |
| SJ300 | 1.0 | 300 | 32 | 48x22x18 | 13/14.5 |