Instruct: Classify Amazon reviews into positive or negative sentiment
Query: works great

these work great! i use them to cut through glass and they seem to be doing really well. unfortunately there are these fiber washers that come with it and the 2nd time i used these with the washers put in, the washers seem to just about had it. i had to buy new ones but couldn't find the same ones so i bought different ones that hopefully hold up better.