Description: Wide Compatibility: Tires set perfectly compatible with all 500, 600, 700, 800 and 900 series models. Material: Made of premium silicone and plastic, durable and elastic. Easy to Assembly: Cut and remove worn rubber tire, place new tire. Easy to replace the front caster wheel, snap in place, no tools required. Effective Anti Skid: The tires will not skid on the floor,also this will prevent failures, make house cleaning more efficient and resistant to wear. Package Contents: 2 Replacement tires, 1 front caster wheel and 1 cleaning brush. It is recommended that replace the tire tread every 6 to 12 months to ensure optimum performance and the front caster wheel is regularly cleaned. Size Chart: Diameter: 6.5CM/2.56inch Width: 1.6CM/0.63inch Package Includes: 2 Pieces Replacement Tires 1 Piece Front Caster Wheel 1 Piece Cleaning Brush Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!