Bike pump or compressor and inflate to recommended PSI Size: approx. 3.53.57.9 cm SUP Electric Pump Adapter Utilizes Standard Valve Fittings to Connect to an Air Compressor or Bike/Tire Pump SUP Electric Pump Adapter Utilizes Standard Schrader Valve Fittings to Connect to an Air Compressor or Bike/Tire Pump With the valve in the closed position, insert the Schrader valve adapter and rotate to lock into place. Remove the cap from the connector and connect a standard electric pump Description SUP Air Pump Adapter utilizes standard valve fittings to connect to an air compressor or bike/tire pump. When the valve is in the closed position, insert the valve adapter and rotate to lock into place. Remove the cap from the connector and connect a standard electric pump. Features Color: As shown in the picture. Material: Rubber. Package includes: 1 x Inflatable Boat Inflator Pump Adapter Note: 1. Please allow some errors due to manual measurement. Please make sure you don't mind before bidding. 2. Due to different monitors, colors may vary, please understand. Hello, please pay attention to your shipping address when purchasing products. If your delivery information (such as name, street, house number, doorbell/box without name, etc.) is incorrect, the order will not be delivered correctly. )