They will scam you
They will scam you! I bought parts for my robot vacuum cleaner and it said it was for F9 D9 robot vacuum cleaner, but it didn't fit. I searched for D9 parts. The seller now claims that it is only for F9. I can see that you can buy a package off parts that says F9 D9 and i know that it can only fit one of them. Thet just want to sell something no matter what and their changes increase if they can make you believe that you are buying the right thing. I am never using AliExpress to buy something again if i don't get my money back!