steps to AliExpress Free Return Service.
free local return(only some countries and only some products)

1,within 15 days, select "Return Goods".
2,Choose "AliExpress Free Return Service"(Only by choosing this option could you get a free return label)
3,Select " return the goods locally"
4, return the goods to warehouse in buyer's country
5, Warehouse confirm receipt
6, Refund (the arrival time depends on the bank)
Enjoy one free local return for each order! Let your shopping worry-free.

Side Brushes Motor Tooth for Irobot Roomba I7 I3 I5 I8 S9 980 E6 E5 Roomba 600 700 800 Series 650 780 880 Vacuum Cleaner Parts
  Compatible with: iRobot Roomba  500 600 700 800 900 series