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. DESCRIPTION 4.93″ inch Shock For Mini-gas scooter, chopper and pocket bike shock Length:EYE TO EYE 125mm (4.93″) Mounting Bolt Hole Inner Diameter:8mm Weight:750 LBS/IN Package Include :1x shock Please check the size before purchasing, you can also contact us if you have any question.