Compatible with all iRobot 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: Wheel tires are designed to improve traction on slippery or uneven surfaces, ensuring smooth movement and preventing slipping. Premium Quality: Made of high-quality rubber, durable and elastic, provides smooth operation and prevents skidding on floors for more efficient cleaning. Easy to Install: Remove worn rubber tire and replace with new one. Front caster wheel is simple to replace, snaps into place, no tools required. It is recommended to replace the tire tread every 6 to 12 months for optimal performance. Regularly clean the front caster wheel. 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 Only the items listed above are included; other products are not included. 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.