a) Yakozwe muri mudasobwa ibonerana
b) Ikwiranye n'akabuto ko guhagarika byihutirwa kanda cyangwa kazunguruke.
c) Gukoreshwa byoroshye kandi bikarinda abakozi gukora nabi burundu.
d) Ikwiranye n'amadirishya yombi afite umurambararo wa 22.7mm-29.8mm.
| Igice nimero. | Ibisobanuro |
| SBL09 | Umwanya w'umwobo: 22.7mm; uburebure bw'imbere: 47mm |
| SBL10 | Umwanya w'umwobo: iminota 29.8; uburebure bw'imbere: mm 47 |


Gufunga by'amashanyarazi n'iby'umwuka