🔧 Connect with Confidence! Includes 2 dust caps to keep your couplers clean and ready. Constructed from hardened steel for long-lasting performance. Engineered for hydraulic rams, jacks, and pumps. Interchanges with Enerpac C-604 and other leading models. Seamlessly connect and disconnect under high pressure. 10,000 PSI pressure 3/8" NPT thread Hardened steel construction The 3/8" Hydraulic Quick Coupler Set by Zinger is designed for high-pressure applications, capable of withstanding up to 10,000 PSI. Made from durable hardened steel, this set features a 3/8" NPT thread and is compatible with various models including Enerpac C-604. It comes with two dust caps for added protection, ensuring your equipment remains in top condition.