AS5160TO 20", orbital head, 16-gallon, traction drive, 130 Ah wet batteries, onboard charger, 31" squeegee assembly is an automatic scrubbers: fang™ and as series in the Advance, Nilfisk and Viper floor-care range available through A.J. Gates. The listed squeegee width is 31.0 inches. The listed tank capacity is 16.0 gallons.