Function:1 Anti-scratch lubricant coating, durable lubrication, strong and durable, long service life. 2. According to the weight of people to increase pressure, the air fork is very suitable for adjusting the bounce. 3. The whole ride is smooth, quiet, strong rigidity and very light, good lock control. 4. Improve the ride of your bike with smooth downhill, bad street driving, more safety. 5. Suitable for 27.5 inch mountain bikes, high quality aluminum alloy, has a long service life. Specification: Item Type: Bicycle Front Fork Material: Aluminium Alloy Colour: Black + Red Total Length: Approx. 73 cm / 28.7 inches. Total width: approx. 16 cm / 6.3 inches. Tube length: approx. 47 cm / 18.5 inches. Straight tube length: approx. 22 cm / 8.7 inches. Weight: approx. 2321g / 81.9oz Model: FKA001 Quantity: 1pcs Style: Straight Tube Shoulder Control Specification: Red Double Tube Air Chamber, Suitable for 27.5 inch bicycles Spring: Air Pressure Race: 100 mm Alxe: 9 mm Package List: a> 1 Front Fork xBike Note: Please allow an error 1 to 0. 0.4-0.8 inches due to manual measurement. Thank you for your understanding.