Specification: Material: Stainless Steel Pressure Gauge 1: φ60mm-3625PSI(250Bar/25MPa) Pressure Gauge 2: φ60mm-5800PSI (400Bar/40MPa) Pressure Gauge 3: φ60mm-8700PSI (600Bar/60MPa) Connect Hose Length: 1M / 39" Pressure Gauge Screw Size: G 4/1 Quick Release Connector: G1/8 Test coupling 1: G 1/4 Test coupling 2: Z 1/4 Test coupling 3: G 3/8 Test coupling 4: G 1/8 Test coupling 5: M 10*1 Test coupling 6: M 10*1.25 Test coupling 7: M 1/8 Test coupling 8: M14*1.5 Test coupling 9: 7/16 Test coupling 10: 9/16 Package Content: 3 X Pressure Gauge 10 X Couplings 1 X Quick Connector 3 X Connect Hose 1 X Aluminum Carry Case Use and Maintenance 1) In using, pressure connector should be installed in the test site of pressure measurement system. The connecting thread of pressure measuring joint should be matched to the threads of the pressure measuring hose. 2) The pressure device can be also measured when the hydraulic system is running, but user should confirm that the pressure point of the pressure gauge is within the range. 3) The pressure device should be placed flat, the distance between pressure measuring point and the pressure device does not exceed 85% of hose length. 4) In measuring pressure, the pressure measurement hose should be connected to the corresponding pressure gauge joint, and then unscrew the dust cover of pressure measuring tie-in, connect the other end of the pressure measuring hose to the pressure connector, user can carry out pressure detection.