My craftsman 8" Pole saw bar became bent and I could not find any bars to fit it. I ordered one and it was not the matching one and no one seemed to have one. I decided to go and purchase a new Pole saw attachment and found the RYOBI one which seemed better and was a 10". As I came home and started to use it, the motor base I was using gave out and had to purchase a new one. I went out and bought the RYOBI one as well. Both machines did a terrific job for me and am very happy I decided to make this purchase