Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Bad product -- Don't buy

First one taken back after 10 minutes of use. The cutting line somehow snagged the shield and ripped it off.The second one has a problem with the cap and spool flying off; Even during very light use. The motor seems good and the swivel design is nice but the spool mechanism is bad. When the spool cap flys off its like a spinner you had when you were a kid, better watch where it goes.