I own a pet care company and use my nail trimmers all the time. I had been using the Bamboo trimmers, which I love- but the blades dull...so I thought getting something with a replaceable blade would be great. Unfortunately, these trimmers are flimsy and just disappointing. The cut isn't exact like with my others and it seems to pinch the pet- the animals were showing signs of discomfort. All in all- this would be fine for a smaller dog and just occasional use, but doesn't work at all well for anything much over 40-50 lbs.