Solid tire, 9.5x2 size, circular honeycomb construction, black. Advantages include puncture-proof operation and no-need-to-inflate maintenance. Honeycomb tire engineering provides the reliability of a solid tire while also contributing additional shock absorption and suspension characteristics during operation. Commonly used for kick scooters, hoverboards and E-mobility products such as the Segway / Xiaomi M365, 1S, Pro, Pro 2, and many others. Inner diameter 14.2cm (5.6inch), outer diameter 22.2cm (8.75 inch).