Straight through quick connect female coupler for connecting directly to a hose with a female straight thread end to a male straight threaded connection3/8" straight through quick connect female coupler with a 3/8" - 18 female straight threaded endValveless construction provides maximum flow with minimum pressure dropStainless steel 303 for better machining characteristics than stainless steel 316 with NBR seal for high tensile strength and resistance to abrasion, tear, and compression setUsed for hydraulic applications in industrial operations