l Ukuzinza kunye nokuqina, ukusebenza kakuhle kovavanyo oluphezulu;
I-HRA, i-HRB, isikali se-HRC sinokufundwa ngokuthe ngqo kwi-gauge;
l Ukuzikhethela kwesinye isikali seRockwell
(HRD,HRF,HRG,HRH,HRE,HRK,HRL,HRM,HRP,HRR,HRS,HRV)
l Ithatha isithinteli soxinzelelo lweoyile echanekileyo, isantya sokulayisha sinokulungiswa;
l Inkqubo yokuvavanya ngesandla, akukho mfuneko yokulawula umbane;
l Izinzile kwaye ithembekile kuvavanyo lomphezulu ogobileyo;
l Ukuchaneka kuhambelana neMigangatho ye-GB / T 230.2, ISO 6508-2 kunye ne-ASTM E18;