These three snow blowers are the NV18SSB, NV18SSG, and NV24DSGL, covering both cordless and gasoline-powered types, with a clear gradient in size and performance. Among them, the NV18SSB is an 18-inch cordless snow blower, requiring no power cord or gasoline, offering flexibility and convenience without the constraints of limited battery life, suitable for light snow removal needs in small yards and patios; the NV18SSG is also an 18-inch model, but uses a gasoline-powered design, providing stronger power output and more reliable battery life, suitable for regular snow removal operations in small to medium-sized areas, and more easily handling medium-thickness snow; the NV24DSGL is a 24-inch dual-stage gasoline-powered snow blower, with a larger body size and a dual-stage structure that effectively improves snow breaking and pushing efficiency, suitable for high-intensity snow removal scenarios such as large areas and thick snow, offering wider snow removal coverage and faster speed.