It's science; more material can move through a larger hole than through a smaller one. Therefore, you can fill tires a bit quicker, minimizing your overhead with time and labour spent and ultimately garnering your company more money on the tires you fill. That's why we're reminding you that any Graco Pump in the market operating with a 1/2" diameter system can be exchanged to a 3/4" diameter. Larger hoses, ball valves, mixing tube and manifold block to help you make more money. The next time you need to swap out your hoses and hardware think about (literally) expanding your operation.