These couplers are designed for high pressure applications such as hydraulic rams, hydraulic jacks and pumps. This 1/4 coupler set consists of a male and female quick coupler. Features: 1/4 Body, 1/4 NPT Thread. Hardened Steel. Ability to connect and disconnect under pressure. 10,000 PSI Rating. 32,000 PSI Burst Rating (Coupled). What's Included: Female Coupler, Male Coupler.