Features 1、Easy Operation: Self locking pressure regulation design, three steps can you set the pressure, lift up to unlock the pressure regulation, turn to adjust the pressure, and finally press down to lock the pressure. 2、Accurate Adjustment: With accurate vacuum adjustment ability, can easily control ‑100kPa to ‑1.3Kpa, help you restore normal pressure. 3、Easy to Install: Comes with a compact size and a light weight as well, the easy installation can be quickly completed. 4、Portable: Small in weight and compact in structure, you can carry the regulator with you wherever you need it for high sensitivity and repeatability situations. 5、ABS Material: Using excellent ABS material, the pressure valve possesses impact resistance, scratch resistance, wear resistance, comes with a long life span. Specification Item Type: Vacuum Pressure Valve Material: ABS Setting Pressure Range: -100kPa to -1.3kPa Package List 1 x Vacuum Pressure Valve