Features: Inflatable boat pressure gauge can be used alone to measure air pressure or connected to an air pump to inflate and monitor air pressure. Good habits should be formed when using to ensure that moderate air pressure is safer and the product will last longer. Pressure gauge is used to measure pressure of inflatable boat kayak raft surfing. The inflatable boat pressure gauge is made of nylon material, making it easy to install and operate.It is recommended to invite professional personnel for installation. Measuring Range: The measuring range of this inflatable boat barometer is 0-5PSI. Specifications: Item: Inflatable Boat Pressure Gauge Material: Nylon, Silicome Measuring Range: 0-5PSI Packing Size: 15*10*5cm Packing Weight: 70g Package List: 1* Inflatable Boat Pressure Gauge