Using this thing is weird, you have to try and hover the weed whipper at an unnatural angle.  The string does not last long at all and is time consuming to change frequently.  The last time I went to change the line, I noticed the Grass Gator housing had developed multiple deep cracks.  I was afraid of it flying apart and causing injury, so I threw it away.  I logged less than an hour with this item and regret that I bought it.