This kit is ideal for professional maintenance of ventilation and heating systems in private homes and commercial premises. It provides the reliable and accurate results you need to efficiently service air conditioning and refrigeration systems. The unit features a powerful 1/3 horsepower vacuum pump with a flow rate of 4 cubic feet per minute. This combination of specifications provides high performance in removing air and moisture before charging. For convenience, a pressure gauge with leak detector is installed, and there are color-coded hoses to help ensure you don't get confused about what connects where. The hoses themselves are flexible, durable and provide a tight connection. There is also a compact carrying bag that is lightweight and sturdy. In general, this is an indispensable tool for those who have to service ventilation and heating systems without any outside help.