Crazy Deal Alert! I bought one of the HF ones a while back for more than this, and this has the flex shaft doohicky! If anyone doesn't have one of these, this is a good time to get one. I might do the same because I really want that flexible option... Enjoy!
https://www.amazon.com/gp/product/B...di-20&linkId=afd5c5b445feaa9d5402c8eb6f1e7b1e
https://www.amazon.com/gp/product/B...di-20&linkId=afd5c5b445feaa9d5402c8eb6f1e7b1e