• copper and rubber and plastic
• Pump adapter for kayak:durable and professional, fit for boat and kayak use ,pump hose adapter
• Multifunction pump adapter:the multi-function adapter can meet all your needs and reduce your burden,air pump converter
• Inflatable boat valve hose adapter:it is durable with strong sealing and leak-proof performance, excellent air leakage performance,kayak pump adapters
• Inflatable adaptor:lightweight and portable, the adaptor is easy to carry and store,kayak pump adapter
• Paddle board inflation adapter:no air leakage between adaptors because internal integrated gasket,quick connect inflation adaptor