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I buy these for our construction company. They might not last as long as the ones you buy at the hardware store for $7 each but they are 6 or 7 times cheaper. I've been buying these for about 3 years now and I'll keep buying them.
Good price nicely packaged in hard plastic case. Fit well with universal mount style. Seem to cut well havnt put to a reas test on hardwood yet to see how well it cuts or if weld will break but I'm optimistic that they will work well.
They only last about half as long as what I was buying at the home improvement stores but at less than a quarter of the price. I am a contractor and use them almost every day so it's a huge savings for me. Will definitely buy again.