The tool must be looked after, then it will serve faithfully for much longer. To lubricate the ratchet mechanism inside the ratchet from the set, you need to unscrew a couple of bolts. When choosing a lubricant, you should focus on low viscosity, because viscous lubrication is not needed in this mechanism.
The ratchet lubrication procedure is preferably performed once every couple of years, with daily use even once every six months.