If you are unsure which saw blades to buy for your jigsaw this is the set. Two blades each of several types, inexpensive and of a reliable name. And if you have an almost new saw, you need a T-shank. They go well with my old Black&Decker JS515. I've noticed that the Bosch "clean cut" blade (in this kit) cuts wood surfaces significantly smoother than the original B&D blades. And a little faster, with less vibration. Oh, and this 10 piece set is significantly cheaper than B&D for fewer blades in the "official" set that goes with my saw. Hm. Highlighted.