I don't know for sure how strong it is. I bought 2 of them just in case one broke. I have used the other one quite a bit and it is still going strong. I've had them for over 2 years, gone on many camping trips/ hiking adventures throughout the Cascade Mountains of Washington State and I have still only used 1 of the saws. That is why I am auctioning the other one. As with anything, if you take care of your things, they will last a long time. :)