Arrow Technology Ltd. use advance control functions to provide best performance. The bicycle is the most efficient means yet devised to convert human energy into mobility. Bicycles are widely used for transportation, recreation, and sport. Throughout the world, bicycles are essential to moving people and goods in areas where there are few automobiles. A bicycle, also called a cycle or bike, is a human-powered, pedal-driven, single-track vehicle, having two wheels attached to a frame, one behind the other. Arrow Bicycle tubes come in different sizes to match different tires. The strong straight or curved tube we use to control the front wheel.