JUNSUNMAY For iRobot Full Range of Sweepers 1Pc Replacement Front Castor Wheel+2Pcs Tires Complete Set: The package includes 2 tires and 1 front caster wheel, providing essential components for the maintenance and repair of your iRobot Roomba vacuum Compatible with All iRobot Roomba 500 and 600 Series 510, 520, 521, 530, 531, 532, 533, 534, 535, 536, 537, 540, 541, 545, 550, 551, 552, 555, 560, 561, 562, 563, 564, 565, 566, 570, 571, 572, 573, 577, 580, 581, 585, 587, 589, 590, 595, 599, 606, 610, 611, 612, 614, 615, 616, 618, 619, 620, 621, 625, 627, 630, 635, 637, 640, 643, 645, 650, 651, 652, 655, 660, 665, 667, 670, 671, 675, 676, 677, 680, 681, 685, 690, 691, 692, 693, 694, 695, 696, 697, 698 Compatible with All iRobot Roomba 700, 800, 900 Series 760, 761, 770, 780, 790, 801, 805, 850, 860, 870, 877, 880, 890, 891, 895, 960, 961, 980, 981, 985 Compatible with All iRobot Roomba e, i, and j Series e5(5150), e5(5134), e6(6198), i3(3150), i3+(3550), i4(4150), i4+(4552), i6, i6+(6550), i7(7150), i7+(7550), i8, i8+(8550), j7(7150), j7+(7550) Easy Installation: The replacement process is straightforward and requires no tools; the parts snap into place easily, making it simple to replace old, broken, loose, worn, or missing front wheel casters on your iRobot Roomba Maintenance Recommendation: For optimal performance of your robot, it's recommended to replace these parts every 2-3 months. The ease of replacement and installation ensures that maintaining your robot vacuum is hassle-free Package included: 1 x Front Castor Wheel 2 x Tires