Mechanical pump inflating air with manual operation. Features air compression, valve mechanics, and pneumatic system with manual labor characteristics. Manual Air Pump Function 01-0:02 Manual Air Pump Function 02-0:02 Manual Air Pump Function 03-0:02 Manual Air Pump Function 04-0:02 Manual Air Pump Function 05-0:02 Manual Air Pump Function 06-0:02 Manual Air Pump Function 07-0:02 Manual Air Pump Function 01-0:02 Manual Air Pump Function 08-0:02 Manual Air Pump Function 09-0:02 Manual Air Pump Function 10-0:02 Manual Air Pump Function 11-0:02 Manual Air Pump Function 12-0:02