Aluminum alloy material, lightweight and will not rust. The spring is integrated inside, there is no possibility of pinching hands. Equipped with pure copper bushing inside, with self-lubricating effect, it is not easy to produce abnormal noise. No need to modify the fasteners, safer and more assured, simple installation, installed at the position of the double hole of the chainstay. Shape and geometry adapted to for btwin children's 14inch bikes. Easy assembly or dismantling. Adjust the plastic housing with a 17 mm spanner. Tighten the screws with 6 mm Hex key. Colour: black Material: aluminum alloy Package Contents: 1 x Bicycle Kickstand Only the above package content, other products are not included. Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.