1.Spindle ifata ibyuma bisobanutse neza, ibyerekezo bihanitse byerekana ibyapa kugirango ihindure imipira ihanitse, imipira myiza, imikorere ihagaze neza.
2.Imashini yimashini iyobora ibyuma bidashobora kwambara kandi nyuma yo kuzimya amajwi, ubukana bwa HRC45 hejuru, birashobora kwemezaigihe kirekire kirambye cyo gutunganya neza.