The 5/8" stranded bamboo flooring I used this with is beyond the hardest hardwood at ~4500 Janka (I had lots of trouble with staples bouncing off the wood when installing). These cut faster (but not fast), and with less effort than other blades, with nice clean edges.. on my cheap skill jig saw!  Turned it into a new tool.  Even handled the bamboo along with subfloor no problem when I had to trim out some HVAC vent work.  no cheap made in china junk here- I could loose myself while looking at the design of how the blades are cut.. good work Bosch!