Description: High quality material and has a longer life. Polished stainless steel surface, exquisite and durable. The double table shows the working status of Co2 system. To adjust decompression pressure gauge to provide stable and accurate CO2 output. Easy installation and maintain; It can be ready to install without any further setting or adjustment. Specification: Material: Aluminum Color: Silver Size: Approx. 7 x 6x 4cm / 2 .76 x 2.36 x 1.57inches Package Includes: 1 piece Aquarium CO2 Regulator.(without bubble counters) Note: The size of the actual item you received could be slightly different from the size above. Due to the light and screen setting difference, the item's color may be slightly different from the pictures
