Features: Make with carbon fibers weaved hose and aluminum alloys, safe and Enduring. Designs to measure the remaining pressure of diver with high accuracy, effectively ensuring diving safety. The scubas diving pressure gauge can rotate 360 degree, allowing for easy viewing of pressure readings during diving activity. Equipped with a night glows pressure gauge, it displays cylinder pressure clearly in dark environment, ensuring diver have accurate information about the cylinder condition. Suitable for regulator highly pressure hoses and mainstream diving equipment, this pressure gauge can easily combined with other devices to meet various diving needs. Specifications: Materials: Carbon fibers weaving and steel Length: 65cm(25.59inch)/80cm(31.5inch)/15cm(5.91inch) Air Pressure: 300Bar Package Includes: 1Pc Diving Residual Pressure Gauge note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.