eedjits, :laughing6:
Don't ever order a sprocket for your 020T, :slam2: 200's are the same just order one of them.
Page 33, but they look round. http://www.worldoftrainz.com/Downloads/Files/Stihl%20Manuals/Parts%20Manuals/Polesaws/HT70-HT75%20-%204138%20-%20Parts%20Manual.pdf