Material: The bicycle chain consists of a series of steel links, each consisting of two interconnected metal plates and multiple rollers (bearings).

High strength: Bicycle chains are designed to withstand the force and torque of riding, so they have high strength and durability.

Flexibility: The chain can roll smoothly on the teeth of the gear and flywheel, allowing for fast speed changes and efficient power transmission.

Compatibility: Bicycle chains come in standard sizes and are usually compatible with most bicycle gear systems.