Inflating a hollow inner tube: first connect the pump to the inner tube valve and then start the pump to inflate the inner tube.
eBay
JQB2418068 Mini Micro 310 Motor Air Pump 27mm Diaphragm DC 6V-12V Small Oxygen Pressure Pump for DIY Monitor Aquarium Fish Tank
Aliexpress UK
Sport Direct's Mini Pump Force 8 is a compact cycling pump designed for quick and efficient inflation. Model: Force 8. Type: Mini/Compact Pump. Material: Alloy and Plastic.
eBay
JSB1523025 DC 5V 6V Mini 030 Motor Air Pump Micro Diaphragm Oxygen Pressure Pump DIY Blood Monitor Sphygmomanometer Aquarium
Aliexpress UK
TINY PUMP 2X can also be used to deflate air product and vacuum bags, helping you to save 70% of storage space. Equipped with the latest air technology, TINY PUMP 2X can reach up to 4kPa air pressure and 180L/min airflow, which enables this mini pump to fill various inflatable products rapidly.
eBay
DC 3.7V-5V 2-Way Normally Closed Mini Air Valve Micro Electric Solenoid Valve Air Gas Flow Control Valve DIY Pump Monitor
Aliexpress UK
Multipurpose Inflation: This electric air pump is versatile enough to inflate air mattresses, sofas, aquatic gear, and even vacuum storage bags, doubling as a practical camping light. 1 x Air Pump. Air pressure: 4000Pa.
eBay
WEST BIKING 100Psi Mini Bike Pump Aluminum Alloy Bicycle Hand Air Pump Tire Inflator Schrader Presta Valve MTB Road Cycling Pump
Aliexpress UK
【Characteristic】Valve conversion,easy to carry. The mini pump is light and portable, suitable for a variety of bicycles, Schrader/Presta Valve conversion easily. 【Weight】 117g.
eBay
1Pcs Bicycle Pump Inflator Cycling Hand Mini High Pressure Bicycle Pumps Air Ball Pump For Football Basketball Bike Accessories
Aliexpress UK
【Portable Bike Tyre Pump】 Length Width: 22.5 4.3cm, The bicycle mini bike pump is small and portable, easy to carry and does not take up space. Due to the different monitor and light effects, the actual colour of the item might be slightly different from the colour shown in the pictures.
eBay
WEST BIKING Mini Bike Pump 100PSI Schrader Presta Valve MTB Road Cycling Pump Aluminum Alloy Bicycle Hand Air Pump Tire Inflator
Aliexpress UK
CORROSION RESISTANCE: The mini air pump uses engineering plastics with good performance as the shell material, which has good corrosion resistance and durability. Material: Engineering plastics. Item Type: Micro Air Pump.
eBay
3.7V 6V 12V Small Mini 370 Motor Diaphragm Air Pump Vacuum Pump Negative Pressure Suction Breast Pump Inflator Aquarium DIY
Aliexpress UK
eBay
Mini Bicycle Pump MTB Bike Manual Air Pump Balloon Cycling Tire Inflator Accesoriess Pump Schrader Valve Floor I0E7
Aliexpress UK