GMMA usoro efere efere n'ọnụ igwe igwe, bụ igwe na-egwe ọka ụdị beveling igwe site na-eji egwe ọka inserts na cutter isi.Ebe a na-arụ ọrụ dị ukwuu maka ọkpụrụkpụ efere ruo 100mm na mmụọ ozi bevel 0-90 nwere ike ịhazi ya na oke oke bevel elu Ra 3.2-6.3.
Inwe ụdị GMMA-60S,GMMA-60L,GMMA-60R,GMMA-60U,GMMA-80A,GMMA-80R,GMMA-80D,GMMA-100L,GMMA-100U,GMMA-100D maka nhọrọ.
