The Pro line is what happens when Morakniv builds for people who have a knife in hand all day. It shares the jobsite DNA of the Basic family, but wraps the handle in a soft friction grip that stays put in a sweaty or gloved hand, and it adds a thick-stock option for the abuse a work knife actually takes. Carpenters, electricians, farmers, and warehouse crews run these because in the whole Morakniv lineup, nothing works harder per dollar.
The C and S are twins split by steel. Both carry a 3.6 inch blade in 2mm stock with a Scandi edge that resets on a pocket stone in a minute. The Pro C runs high carbon steel for the keenest working edge and the fastest touch-ups, while the Pro S goes stainless for wet trades, food-adjacent chores, and anyone who will not remember to oil a blade. Pick by whether your knife lives indoors or out in the weather.
The Robust is the sleeper of the whole Mora catalog: 3.2mm blade stock — the same thickness as the Bushcraft line — in a plain work-knife package under five ounces. That spine takes prying, scraping, and kindling duty that would fold a thinner blade, which is why it has a quiet cult following among preppers and tradesmen alike. It is the cheapest way into a thick-stock Mora, and for a truck or shop knife that gets zero babying, it is the honest answer.