GBM yog hom shearing hom hlau beveling tshuab los ntawm kev siv cutter hniav uas tau siv dav rau kev tsim qauv hlau.
Nws yog taug kev hom nrog rau phaj ntug nrog kev kub ceev kwv yees li 1.5-2.8 meters ib feeb. Nrog qauv GBM-6D, GBM-6D-T, GBM-12D-12d-R, GBM-16D-R, GBM-16D-R, GBM-16D-R, Vary ua hauj lwm ntau rau cov ntawv ntau hlau.
