Suit for Most Hoverboard The "Clamp" of hoverboard seat attachment is adjusted. Therefore it can suit for different size hoverboard(6.5"-10"). Solid & Flexible Front Wheel Made of solid tires, the front wheel of hoverkart is also flexible to use. It can rotate 360°, which can bring you more fun. Easy to Adjust the Length There is a knob to adjust the length of bar (27”to 35.5”). The hoverboard seat attachment can fit people from 4 - 65 years old. Turn into a Fun Hoverkart It's easy to turn your hoverboard into a hoverkart. No require for balancing skill. It can suit for most people. Have fun with your new equipment. Solid & Adjustable Made of solid metal, the max payload of this hoverkart is 270Ibs. The gasket under the Clamp protect your hoverboard. No Worry for Quick-Wear Part Comes with 4 straps, it can use for long time. Replacement for straps is provided. Features & details Compatibility - Hiboy hoverboard seat attachment is compatible for 6.5'' 8'' 8.5'' 10'' inch self balancing scooters, which is safer for kids/ adults. (Hoverboard is not included) Safe & Comfortable - The ergonomic hoverboard seat is reliable and comfortable. Equipped with soft & premium sponge steering handlebars. You can smoothly accelerate, turn, and brake with 2 hand bars. 360° solid rotating front wheel, it is easier to change direction you want. Hoverboard go kart will bring more fun and comfortable driving experience. Adjustable Length - Our hoverboard attachment come with flexible adjustment knob and there are multiple precise gear positions that can be adjusted 27''- 35'. You can quickly adjust the length to meet your needs. It is an ideal choice for children and adults. Solid & Easy to Install - The Hoverboard seat attachments are made of upgraded sturdy materials with max load of 270 lbs. And we offer an simple assembly instruction and all necessary tools with this hoverboard seat attachment. Only 3 minutes to assemble.