They don't seem to hold a sharp cutting edge very long. Thus, I found it hard to cut pine trim.These are cheap. Don't expect them to cut through anything harder than pot metal. they work fine for plastic, and some wood, but they are not durable.These are okay. They are no Bosch or similar. They are cheap, knock offs great for a new person or for a crap job where you’d rather not screw your good blades.You will need so many to get the job done. You should have expected that though.it's hard to find blades that will last after drywall. these do. then go on to cut metal, wood and more drywall. best I've come across at a value price.A lot of blades for little money equals "they won't last long under max load", or, wood/metal blades that work great for soft woods, but not nails. Still a good value for short quantity mix use.Let me start by acknowledging that I very seldom feel the need to post a review. However, I will make an exception in the interest of saving you from making the same mistake that I made in buying the bladesThese are bi-metal blades only in the fact that they are made from two different metals. That do not cut metal and only barely cut wood.The tack welds that are used to join the blade to the mounting piece failed on 3 of the first 4 blades that I used. Very poor qualityLe casan perfecto a mi herramienta pero al utilizarlas no duran nada incluso una de ellas se desprendió la cuchilla de su basa, precio bajo pero calidad bajaYou’re not gonna find a better blade for a better price at a big box store. When you’re paying just over a dollar per blade online versus paying $10 per blade in the store you can’t go wrong. The people that say this blade broke into three different pieces while using it are pushing way too hard. Let the tool do the work. Well worth it to purchase these. I will be purchasing these again in the future.Les lames brûlent vite! J’ai coupé 4 clous et elle n’était plus bonne pour couper le bois. Je ne recommande pastrès satisfaitexcellent product, durability, highly recommandedGreat