A bike floor pump is a device used to inflate bicycle tires. It consists of a barrel, a piston, a hose, and a chuck. The barrel is the main body of the pump and contains the piston. The piston is a cylindrical piece of metal that moves up and down inside the barrel, compressing the air inside. The hose connects the barrel to the chuck, which is the part of the pump that attaches to the tire valve.
Floor pumps are more powerful than hand pumps, and they can inflate tires to a higher pressure. This makes them ideal for use on mountain bikes and other high-performance bicycles. Floor pumps are also more stable than hand pumps, so they are less likely to tip over and damage the bike.