1. Ku bihangano binini by'ibitabo bizunguruka
2. Hamwe n'ingufuri y'inyuma yo mu bwoko bwa G na L yo mu bwoko bwa L ihitamo ingufuri isanzwe
3. Ikwiriye ikaye (igifuniko gifite ingano nini kurusha impapuro z'imbere)
4. Max ishobora gukoreshwa kuri mudasobwa ifite ubugari bwa mm 20
1) Igice cyo gupfunyika umwobo
2) Igice cyo guhuza umwobo
3) Igice cyo gukata, gufata no gufunga umukasi
4) ibitabo byarangiye gukusanya igice
Ubwoko bwa G (umurambararo w'uruziga 14mm -25mm), uruziga 14mm -25mm, bushobora guhitamo uburyo bwo gufunga ubwoko bwa G, ariko ubwoko bwa G buterwa n'uburyo bwo gufunga umwobo, umurambararo w'uruziga n'umurambararo w'insinga.
Ubwoko bwa L (umurambararo w'uruziga 8mm - 25mm)
| Umwanya w'uruziga (mm) | Umurambararo w'insinga (mm) | Umwobo (mm) | Ubunini bw'igitabo (mm) |
| 8 | 0.7-0.8 | Φ3.0 | 5 |
| 10 | 0.7-0.8 | Φ3.0 | 7 |
| 12 | 0.8-0.9 | Φ3.5 | 9 |
| 14 | 1.0-1.1 | Φ4.0 | 11 |
| 16 | 1.0-1.1 | Φ4.0 | 12 |
| 18 | 1.0-1.1 | Φ4.0 | 14 |
| 20 | 1.1-1.2 | Φ4.0 | 15 |
| 22 | 1.1-1.2 | Φ5.0 | 17 |
| 25 | 1.1-1.2 | Φ5.0 | 20 |
| umuvuduko | Ibitabo bigera ku 1300 ku isaha |
| Umuvuduko w'umwuka | 5-8 kgf |
| Umwanya w'uruziga | 8mm – 25mm |
| Ubugari ntarengwa bwo gufatanya | 420mm |
| Ubugari buke bwo gufatanya | 70mm |
| Imikasi yo mu mugongo yo mu bwoko bwa G | 14mm – 25mm |
| Imikasi isanzwe yo mu bwoko bwa L | 8mm - 25mm |
| Inzira yo gutereramo umwobo wo mu ruziga ihitamo aho uherereye | 5,6,6.35,8,8.47 (mm) |