• nylon, alloy
• Air pumping head adapter:using this adapter, you can easily replace the special rubber boat pump to a standard valve,Pump Adaptor
• Kayak adapter:strong sealing, anti-leakage, durable, let you use it more easily,Air Pump Adapter
• Air pumping nozzles adapter:this sup pump adapter is made of nylon, alloy materials, it is solid structure and durable,Air Pump Attachments
• Air pump adaptor:can be used with car air pumps and conventional tire air pumps,Kayak Air Adapter
• Sup pump adapter:cost- , you can buy this practical product at an ,Air Pump Converter