The "Roller Jet Pulsator" is a feature in LG semi-automatic washing machines that enhances the washing performance by generating a unique pulsating action. Here's how the Roller Jet Pulsator works:• Design: The Roller Jet Pulsator consists of a set of rotating pulsator fins located at the bottom of the wash tub in LG semi-automatic washing machines.• Pulsating Action: During the wash cycle, the pulsator fins create a powerful and dynamic water flow. This flow generates a rubbing and scrubbing effect on the clothes, aiding in dirt and stains removal.• Enhanced Agitation: The pulsating action of the Roller Jet Pulsator helps to agitate the clothes in a multidirectional manner, ensuring a thorough and effective washing performance.• Improved Washing Results: The pulsating action, combined with the water flow, helps to dislodge dirt particles from the fabric fibers, resulting in cleaner and fresher clothes.• Gentle on Fabrics: Despite its powerful agitation, the Roller Jet Pulsator is designed to be gentle on fabrics. It minimizes the risk of damage or tangling while ensuring effective cleaning.Overall, the Roller Jet Pulsator in LG semi-automatic washing machines provides a robust washing action that helps to achieve better cleaning results. Its unique pulsating motion, combined with water flow, ensures thorough and gentle washing performance for a variety of fabric types. These models have Roller Jet Pulsator P7525SPAZ, P8535SKMZ, and P8535SPMZ.