Specification: 100% brand new with high quality Material: Rubber Color: Red + Black Diameter: Approx.2.2 cm / 0.87 inches Weight: Approx.0.18kg This transmission is perfect for bike speed shift Beautiful shape, space saving design Good grip, comfortable handling Package Included: 1 Pair of Bicycle Gears 1 Pair of Handles Note: Please allow minor error due to manual measurement. The colors may be a little difference for the different monitor display.