1. Packing list: 2 tires + 1 front wheel.
2. 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 compatible. 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.
3. 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.
4. Compatible with all iRobot Roomba e, i, & j series e5 (5150), e5 (5134), e6 (6198), i3 (3150), i3+ (3550), iq4 (4150), id4+ (4552), iq6, i6+ (6550), ih7 (7150), g7+ (7550), ig8, i8+ (8550), j7 (715), j7+ (7540).
5. Easy to replace, no tools required to snap into place, can replace old broken, loose, worn or lost Irobot Roomba front wheel casters.
6. In order to maintain the best performance of the sweeping robot, it is recommended to replace parts every 2-3 months.
