• copper and rubber and plastic
• Air adaptor:the product suitable for kayak, dinghy, inflatable, surfboard, etc,kayak tool
• Kayak supplies:material with stable performance and ,multifunction pump adapter
• Boat air connector:no air leakage between adaptors because internal integrated gasket,boat pump adapter
• Kayak adapter:the multi-function adapter can meet all your needs and reduce your burden,multifunction air pump adapter
• Kayak hose adapter:durable and professional, fit for boat and kayak use ,pump adapter