I used these in my Dewalt cordless reciprosaw to prune some branches that were just a little too big for my loppers, but still too small to justify breaking break out my big chainsaw.They worked great for pruning and cutting up the twenty or so fresh green oak and old dead petrified branches that ranged in size up to about two or maybe three inches max diameter. The first blade out of the pack still seems almost as sharp as when new even after all the cutting I did with it.Just like a regular pruning saw, these blades are extremely sharp with viciously aggressive teeth and I find that with the combined 12-inch blade plus the length of the reciprosaw, you really have to be extra careful how you wield the tool around. At five to a pack, I think they are priced right and a good value. Overall, I'm very pleased with these blades and have no problem recommending them.