The Bosch Carbide Plunge Blade is among the best I have ever used. If cuts clean and quick - perfect for undercutting door jambs on flooring projects, square pockets, etc. It adds a whole new dimension to oscillating power tools.
First things first. IT FITS. Yes, it is "universal," but I've been disappointed by so called universal fits before. This one fits my Chicago Electric just fine.
Secondly, I like the shape. It is a wide cut. Good. And the hour-glass shape allows you to scoot it around obstructions. Very clever.
This is the one blade to leave on your tool head. It will cut anything common (low carbon steel, brass, aluminum, etc), without much wear. This will outlast bi-metals and especially even cheaper blades. Fantastic. For me, it was great for flush cutting through fasteners (mild steel 1/4-20, as well as brass). Other blades can do this as well, but this one can do it without destroying itself. Worth every penny.
It fit my Jobmax head without an issue.
This Bosch 1 3/4" Carbide tip blade can cut both drywall, metal and wood. The tip is welded to a high-carbon steel body so it should last 30x longer than the standard blades. It cuts fast through wood with no problem. It standard 12-pin will fit most brands.
It's always nice to have the tools to do the job, and having a nice new sharp blade makes jutting a whole lot easier. This Bosch blade also fit my Fein multi master tool.
I've been doing some remodeling that requires removing nailed-in old work electrical boxes and replacing them. I first tried my reciprocating saw, but after punching through the drywall behind the box my wife nixed that. So I got out my multi-tool and this carbide blade and was able to proceed with great delicacy - cutting through the nails without damaging the studs or drywall. One nice feature of this blade is that it is wider at the front, making it easier to reach those nails at the top and bottom of gang boxes that are behind the drywall.
This thing cuts like through pine and oak like they're butter - well, almost. I've used other carbide blades before from Dremel, which is owned by Bosch, and those were extremely good & durable - this one appears to be of the same high quality, though I haven't used it long enough to speak to its durability. It definitely does cut smoother and faster than non-carbide blades, the price is definitely a premium but I think its worth it, especially if it lasts nearly as long as they claim (30x longer than non-carbide blades).