• copper and rubber and plastic
• Multifunction pump adapter--make a fast connection between sup hand pump adaptor,Pump Adapter for Kayak
• Boat air connector--the multi-function adapter can meet all your needs and reduce your burden,Kayak Hose Adapter
• Boat pump adapter--durable and professional, fit for boat and kayak use ,Boat Hose Adapter
• Air adaptor--used for kayak, inflatable boat, sports rowing boats accessories,Kayak Adapter
• Multifunction air pump adapter--made by plastic material, durable and provide ,Pump Adapter