Features: Made of high intensity rubber and metal material solid and durable in use. Easy installation convenient and simple to install and detach replace quickly. Explosion proof and anti puncture tire low noise during use no inner tube. Anti-skid grooved design nice shock absorption much safer for users. High density and high strength no need to inflate convenient and practical. Great 250w motor engine replacement for Ninebot ES1/ES2/ES3/ES4. Specifications: Material: Rubber+Metal Power: 250W 42V Specifications: Material: Rubber Item Size: 20 * 20 * 5cm / 7.9 * 7.9 * 2in Item Weight: 3091g / 6.8lb Package Size: 24 * 24 * 14cm / 9.4 * 9.4 * 5.5in Package Weight: 3304g / 7.3lb Package List: 1 * Electric Scooter Wheel