I-GBM uhlobo lokugunda uhlobo lomshini wensimbi yensimbi ngokusebenzisa umsiki we-cutter osetshenziselwa imboni yesakhiwo sensimbi.
Kuhamba ngohlobo kanye nonqenqema lwepuleti ngejubane eliphezulu i-approx 1.5-2.8 amamitha amane. Ngamamodeli we-GBM-6D, GBM-6D-T, GBM-12D-R, GBM-16D-R, 16d-R-R-REPER PRY BREACY ze-Pers Sheet.