A quick demo cutting 16d nails (4) using the blade from a 49-25-1259 pack of 10. The USA made blade is bi-metal, with apparently some of the metal being titanium. The universal fit was fine on my cheap Chicago Electric oscillator. I used the blade off camera for an actual project, here I just demo it.

These are pricey, but seem to hold up fairly well. A three pack should last for typical handy-work usage, and is more affordable.