Features Precision Thread Structure: The quick connector has high hardness and clear thread, which can be better connected and used when in use, and is not easy to crack. High Hardness PVC Profile: The quick connector is made of hard PVC material, which is stable and durable, and can meet our basic needs. Wide Range of Applications: C-type self-locking quick connectors have a wide range of applications and can be widely used in machinery, electronics, automobiles, packaging, medical and other industries. Easy to Install: The external thread quick connector has a built-in steel ball, which can be fastened without obstruction, easy to operate and easy to use. Basic Specifications: The quick connector kit has a maximum pressure resistance of 20kgf/cm², a working pressure of 0~0.92kgf/cm², and an operating temperature of -35°C~60°C. Specification: Item Type: Self Locking Quick Connect Material: PVC Profiles Maximum Pressure Resistance: 20kgf/cm² Working Pressure: 0~0.92kgf/cm² Operating Temperature: -35℃~60℃ Model: SM+PM-20 Thread Outer Diameter Approx.13mm / 0.51in, Thread Type R1/4 SM+PM-30 Thread Outer Diameter Approx.16mm / 0.63in, Thread Type R3/8 SM+PM-40 Thread Outer Diameter Approx.20mm / 0.80in, Thread Type R1/2 Package List: 5 x Quick Connect Fitting 5 x Lock Head Note: 1. During the use of the joint, do not frequently pull out and insert the air pipe, which will affect the service life of the joint and the air pipe 2. When the pipe is inserted into the joint, needs to be inserted into the bottom of the joint to avoid the possibility of air leakage 3. When pulling out the air pipe, first confirm that there is no pressure in the tube, press the end caps of the joint to the end and pull out the air pipe Package List 5 x Quick Connect Fitting 5 x Lock Head