Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Great at what it does

I bought this scale to refill one pound propane tanks from a 20# tank for personal use in a buddy heater for ice fishing. I only gave it 4 stars because it is built kind of cheap plastic but it is perfect for what it does weigh the small tanks, you just have to be careful with it don't drop it. For the price you can't beat it.