I-1.Umshini ufanelekile inqwaba enkulu kanye nokukhiqizwa okukodwa kwe-cylindrical spur kanye namagiya e-helical, amagiya wezibungu kanye ne-sprocket.
I-2.Umshini ubonakala ngokuqina okuhle, amandla aphezulu, ukunemba okuphezulu kokusebenza, futhi kulula ukusebenza nokugcina.
3. Umshini ungasetshenziswa hhayi kuphela ngokusika phambili nangemuva, kodwa futhi nge-axial noma i-radial feed.