In the video, Teemu from Happowa presents the Spreader membrane pump product family, which is designed for the application of both acid-based and biological silage preservatives and includes four different pump models: Spreader 4000, Spreader 6000, Spreader 15 and Spreader 30. The video goes over the assembly and use of applicators, controller functions and accessories suitable for Spreader applicators. At the end of the video, Teemu also shows how to calibrate the device. The video is subtitled in English.