Sumet ɗin, wanda kuma aka sani da purger biyu parger, shi ne cibiya ga polunger na famfo na lantarki mai gina lantarki, daidaici da aka gina ƙarfe da sanye da kayan bawul. Matsakaicin matsin lamba na iya kaiwa shekara ɗari bakwai, mafi ƙarancin damar dacewa yana 3 - 5um. Yunkurin gudun hijira shine 0.12c ko 0.18cc. A sarkar motocin sufuri mai matsi mai matsin lamba, kuma a lokaci guda yana haifar da matsin lamba a kan abin da ya shafi mai amfani, sannan kibanta man shafawa ko mai a cikin bututun.
