Description: 【Wide Application】Used for hydraulic or pneumatic systems, connecting to the diagnostic ports for engines 【High Performance】The PD Coupler is used for easily and quickly connecting the test instruments, gauges, transducers and flow sensors to the system diagnostic test ports, allows you prime your fuel systems and raise the hydraulic pressure with ease. The flush face valves can minimize the air inclusion and spillage, prevents uncoupled leakage 【Size of Quick Coupler】This coupler is available in 1/8" Body Size with a rated pressure of 6000 psi when connected, 1/4"-18 NPTF Thread Size, 2.12" Length. In additional, the coupler is knurled on the surface for better grip, easy to connect and disconnect 【Material】Made from steel for great strength, prevent corrosion and rust, wear and impact resistance, sturdy 【Convenient】 When connected with PD Series Nipples, the coupler enables a simple push to connect operate, offering a hassle Frees user experience Specification: Material: Steel  Length: 5.38cm/2.12inch Diameter: 2.43cm/0.96inch Size Chart: Package Includes: 1 PD242 Series PD Steel Hydraulic Test Port  Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.