Grind on the move with the Madd Gear Ninety9 Grind Rail, it's perfect for anyone wishing to practice their grinds. With a quick and simple assembly, you can be up and ready to grind within 5 minutes! Perfect your skills and techniques at home and then go to the skate park to show off your new tricks! The Madd Gear Grind Rails are great for scooters, skateboards, and skates. Need to move location? Madd Gear Grind Rails are super easy to transport and can be disassembled within 5 minutes. Height can be easily adjusted for when you feel you need to move it up a step! The Grind Rails help riders improve and learn new tricks comfortably. Quote from MGP UK Pro Rider Indy Clayson - "I was really surprised with how well these rails work. It took me about 2 minutes to put them together, anyone could do it. It's so easy to change the height, and they go really low which is great to learn new tricks on. They're super light so they're easy to move around, and despite how light they are, as soon as you get into a grind on them they don't move or wobble at all! They are so fun, I could honestly ride them all day long." Features: Adjustable height from 17 to 23cm Industrial grade materials Durable construction designed for outdoor use Wide and stable supports Assembled dimensions: 251 x 29 x 23cm Maximum rider weight of 100kg Suitable for ages 7+