[Premium Quality] Made of premium plastic, durable and elastic,wear-resisting and smooth running, the wheel will not skid on the floor, make cleaning more efficient. [Compatible Models] The replacement front caster wheel and tires fits for 500 600 700 800 900 Series and i7 i7+plus 7150 E5 E6 Models. [Enhanced design] Enhanced design with bearing eliminates the wheel falling out from wear.Bearings allow the wheel to spin easier and reduces the amount of debris that breaks down functionality over time. [Easy to Assemble] Cut and remove worn rubber tires, place tires. Front casters only need to snaps in place, no tools required. [Replacement] It is recommended that replace the tire tread every 6 to 12 months to performance and the front caster wheel is regularly cleaned. Type:Vacuum cleaner parts Colour:Black Material:Plastic Package Contents: 2 * Front Wheel 2 * Tires Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.