Considering the price I decided to give it a try. I knew they would be disposable and pre-made, but that's not even the case. They work great on very soft woods. But don't try to use them for something you don't want to lose. I tried to cut out a piece of purple heart about 3/16 foot thick. BIG NO! Buy a quality racquet. It's cheaper anyway if you do more than 1 cut!