The Pumpjack is a medium-sized, mechanical device designed for extracting crude oil in Factorio. It features a rectangular base with a prominent, angular arm that moves up and down in a piston-like motion. The structure is predominantly metallic with visible bolts, pipes, and hydraulic components, painted in industrial colors like dark gray and yellow hazard stripes. The arm has a polished, reflective finish, contrasting with the rougher, textured base. The Pumpjack emits a rhythmic, mechanical sound during operation, with small particle effects representing oil extraction.