On top of the rollers is a cone-shaped lip that keeps your hose or cord on track, which prevents the hose from accidental paint contact from flailing with a sharp movement. The unique design features a roller system that helps your hose or cord move along the guard while preventing any unnecessary friction, as well as a lip on top and below the rollers that keep the hose contained. Ezy Wheel is a revolutionary tool that prevents your hose and cords from getting caught underneath your tires during car detailing. Due to the durable polyethylene construction, you may find them the most durable and handy detailing tool ever used.