Features 1、Air pressure gauge. Suitable for inflatable boat, rubber boat, SUP board with the certain valve. 2、It also can work as a valve adaptor, for it is special connection structure. 3、It also can work as a valve adaptor, for it is special connection structure. 4、Easy installation and operation. 5、Measurement Range is 0‑0.35 bar or 0‑5.08 PSI Features: Air pressure gauge. Suitable for inflatable boat, rubber boat, SUP board with the certain valve. It also can work as a valve adapter, for it is special connection structure. This air pressure meter can be used on soft bottom inflatable boats or river rafts. Easy installation and operation. Measurement Range is 0-0.35 BAR or 0-5.08 PSI. Specifications: Condition: 100% Brand New and High Quality Material: Nylon Color: Black Total Length: Approx. 95mm/3.7'' Barometer Diameter: Approx. 55mm/2.1'' Tube Upper Width: Approx. 20mm/0.78'' Tube Lower Width: Approx. 16mm/0.6'' Measurement Range: 0-5.08PSI or 0-0.35BAR Compatible Valve: 6-hole, 8-hole Valve Weight: Approx. 70g Packing List: 1 x Kayak Barometer Package List