I didn't expect it to be this good for the price. It does a great job on siding, I cut six spotlights into my ceiling which is vinyl soffit, soft and not that good a test but... it's very sharp and heavy, not cheaply made. And packed very well, you can keep it there all the time. Let's see as far as durability goes, I haven't had it long but I have a feeling it will last quite a while if cared for like any other hole saw. I recommend using it upside down on vinyl as it's so sharp it can pop out and cut into your siding.