WW-2800 Whisper Wash 28 inch Big Guy Surface Cleaner provides bigger surface coverage to save you time and deliver higher quality on large surfaces. Only used on four jobs. Basically brand new. Durability is provided by the powder-coated aluminum and steel axle, as well as the resilient cleaning brush that ensures to limit the water to the applied surface and not the operator. The swivel has enough power to utilize either two or four tip spray bar, due to its self-lubricating twin thrust bearings. IIt is standard for the WW2800 Big Guy to come with the 2-tip bar.This model came with a four tip bar.