3 PARTS: Including three parts, one inside part, one outside part and valve .,Made of high dense PVC plastic, sturdy, anti-corrosion and durable.,Double seal leak protection, excellent air leakage performance.,Fit for most inflatable boats, river rafts and kayaks, dinghy, etc.,Easy to inflate and to deflate, good performance and long serve life.,3 PARTS: Including three parts, one inside part, one