Link New Tech offers the patented 10-gal. QwikDraw series Speed Draw Coolant Flush and Exchange Machine. Without disconnecting any hoses and by turning a single valve, this exchange machine's Speed Draw feature uses a vacuum to completely exchange coolant and remove air pockets from all vehicles from the radiator or expansion tank, in less than five minutes. The large 2.5” diameter tank opening and advanced center control valve facilitates fast and spill-free use of the Qwik Draw.