Advanced Design: This flat face hydraulic connect coupler set features an improved valve design, which allows for a rated pressure of 4000 PSI, 45/L high-flow, zero fluid loss, and long service life. It meets the standards of ISO 16028, perfect for connecting your hydraulic lines.Quick Connecting: The sleeve locking mechanism (with 1/2" NPT thread) makes the couplers easy to connect with a simple push. Rotate the collar to lock them tightly, preventing accidental disconnection. If you need to disconnect it, aim the point at the gap, then give a pull. Connection is simple, effortless, and requires minimal force.Hardened Steel Construction: Our quick couplers are strongly built with hardened stainless steel to resist deformation and high temperatures. The zinc-nickel plating provides high resistance against rust and corrosion. They are built tough to last for years to come.Dust Covers Included: Dust caps are included to prevent dirt from disrupting the connecting system, preventing the risk of malfunction. The retaining ring is covered by a sleeve. Additionally, a dust seal is placed within the spring area.High Compatibility: The quick coupler set is designed for applications where hydraulic spillage is likely to occur. It can be interchanged with most types of skid steers loaders, such as Bobcat, John Deere, CAT, Case / New Holland, Kubota, and many others.