I used these on my low powered Makita table saw and cut over 3500 feet of shiplap joints in South American hardwood that was sawn into 6" wide boards 1/2" square joints that these blades cut through without a problem , I had them resharpened locally and did two more smaller houses  ceiilings and made a few beds with them as well and now they are ready for the heap as I chipped the hell out of them , Understandably they paid for themselves many times over and with their chipper blades requiring less power to operate the saw my worn Makita is still going strong even after I bought it used at a tag sale for $25.00!!