Series: HP HP is a cone-type thread connection quick coupling specially designed for high-pressure hydraulic for 700bar/10000psi. This series of quick couplings are made of special high-pressure-resistant material and with galvanized surface. HP and similar products are interchangeable, mainly used in hydraulic jacks and hydrocylinders. Interchangeability requirement: similar specifications. Installation form: thread. Tube diameter: 7mm. Temperature: -40-120. Thread forms: internal and external thread 3/8 MPTF