worker use finger with glove to scoop up lithium grease from white plastic can in the laboratory. yellow transparance grease on

auto background ball bearing car closeup concept dirty engine engineering equipment finger friction garage gear glove grease hub industrial industry laboratory lithium lubricant lubricating machine machinery maintenance man manufacturing mechanic mechanical mechanism metal motor oil plastic repair ring roller rolling round scoop service spare steel technical technology testing transparance transportation truck tyre use vehicle wheel white work worker yellow