Compatible with all Roomba I, E, and J Series models including i3, i3+, i4, i6, i6+, i7, i7+, i8, i8+, E5, E6, E7, j7, j7+, 7550, 3550, 3150, 5150, 6198, and 7150. Non-Slip Design: Wheel tires are engineered to enhance traction on slippery or uneven surfaces, allowing smooth movement without slipping. Premium Quality: Made from high-quality rubber, these tires are durable, elastic, and provide smooth operation, preventing skidding and improving cleaning efficiency. Easy Installation: Remove the old rubber tire and install the new one. The front caster wheel is simple to replace—just snap it into place with no tools required. It is recommended to replace the tire tread every 6 to 12 months for best performance and to clean the front caster wheel regularly. Color: Black Material: Plastic Package Contents: 2 x Side Brushes, 2 x Tires, 1 x Front Wheel Caster, 1 x Screwdriver, 1 x Cleaning Brush Note: Light reflection and differences in display screens may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.