The car valve adapter is your best choice, and the different specifications 12 pieces can meet different inflatable equipment. Don't worry about other specifications. Suitable for Dunlop valve (DV), Presta valve, Flash valve (BV), Presta valve (SV), Schrader valve (AV) High quality SV valve adaptor: Tailored for equipment that is inflated, must prevent air leakage, made from high-quality pure copper, corrosion resistant, does not change colour after long time use. It takes very little space and is very comfortable to carry. You do not feel the weight when you ride, and it will add no extra weight to your luggage. A little mouth to solve any inflatable problems. Widely used: 12 pcs car valve adapter allow the adaptation of unsuitable valves to air pumps or gas station compressors. Basically suitable for all standard valves. Suitable for mountain bikes, road bikes and fixie bikes, also ideal for inflatable toy. Air bed, sports ball, balloon, yoga ball, swimming ring, Aolange it is installed, it can inflate various specifications without buying different inflatable cylinders.