About this item Made of aluminum alloy material,hard to break,strength and durability. Spring seats insulated to springs to ensure quiet and comfortable ride quality. Designed for bicycle shock-absorbing. Essential for mountain bikes,electric bikes. Suitable for home,bike store and so on. A gift for friends that likes riding bike. Color:White Measurement: Eye center to center: 360mm (14inch) Mounting hole diameter: 10mm Rear suspension shock absorber, suitable for most 4 wheels with same mounting size such as quad ATV go kart buggy Max loaded: 850lbs, Travel length: 55M Please measure the size of your stock shock for matching before buying