Specification: Condition:100% Brand New Material: Steel + aluminum alloy Color: As Pictures Shown Size: Approx.Adjustable height: 51-63cm Maximum load: 100 kg Buffer material: high elastic sponge/vacuum plastic Weight: Approx.2736g Package list: 1 x Electric Scooter Seat 1 x Wrench 4 x Screws 8 x Bolt 1 x hex wrench 1 x Turner 1 x Seat Tube 1 x Seat Base 2 x Top Cover of Folding Boxes How to install? 1. Place the base, open the seat tube of the collapsible base, lock the collapsible box and release it quickly (press and hold the collapsible lock column, loosen the upper cover of the collapsible box and release it, and then lock the quick release), and put the base on the back of the pedal of the scooter. 2. Locking screw, first, place two plastic locking blocks between the bottom plate and the scooter body, insert screws into the mounting holes one by one, and pretighten. Each screw is pretightened 8 times to hold the plastic lock block. Then tighten the screws one by one until they lock. Note:Please note that there is no need to make holes for the installation. The seat of the scooter is specially designed for the scooter and can be installed without damaging the scooter.