This is a kind of professional manifold gauge set for measuring pressure in refrigeration equipment. Changeable piston type valves ensure prefect sealing. Both high pressure gauge and low pressure gauge are support to readjusted to the zeropoint. The manifold gauges are marked with temperature and pressure scales or are equipped with interchangeable refrigerant scales. You can have a try.   Features: Professional manifold gauge set for measuring pressure in refrigeration equipment.  Made of fine quality material, practical to use and with fine durability, so it can stand to frequent use and accidental damage.  Changeable piston type valves ensure prefect sealing.  Both high pressure gauge and low pressure gauge are support to readjusted to the zeropoint.  The manifold gauges are marked with temperature and pressure scales or are equipped with interchangeable refrigerant scales.  Read easily with extra-large windows, display 6 datas on the gauge meters, PSI, Bar, R-404A, R-134A, R-22, R-410A.  Red/Yellow/Blue, 3 hoses in a set, can satisfied with all your demands.  The hoses support 2500 PSI c-harging pressure and 500 PSI burst pressure.  Equipped with one hook, easy to hangs on wherever you want.   Specifications: Name: Refrigeration Guage Set;  Model: YS-027;  Material: metal+plastics;  Type: black box, red box, blue box (optional);  Item size: Guage size: 183 * 157 * 65mm / 7.20 * 6.18 * 2.56in;  Hose length: 1.5m / 59.06in;  Item weight: Black box: 2629g / 5.80lb;  Red box: 2637g / 5.81lb;  Blue box: 2680g / 5.91lb;  Package size: 360 * 265 * 85mm / 14.17 * 10.43 * 3.35in;  Package weight: Item weight: Black box: 2629g / 5.80lb;  Red box: 2637g / 5.81lb;  Blue box: 2680g / 5.91lb;   Packing List: 1 * Refrigeration Guage;  3 * 1.5m Hose;  1 * Can Opener;  2 * Connection Adapter;  1 * Wrench;  1 * Hook;  1 * Bag of Fittings;  1 * Plastics Box