General description 3/8" hose to connect between unicool refrigerant cylinder (use adaptor set 544932) and refrigeration system or used for larger vacuum jobs features high quality hose material both ends have 3/8" sae flare female connection embedded o-ring seals for positive seal benefits flexible even in low teperatures without colapsing approved for high pressure blends technical data product code uch-72-y length 1.8 m - 6 ft connection 3/8" sae flare