Editorial Product Review:Item Description:For use with power handsaw No.1640VS. For flush cuts in wood, wood composites and plastics. Ultra-fine teeth design provides smooth, tear-free cuts. Flex-resistant, high alloy steel blade guides for accurate guidance. Offset position of saw teeth from blade guide makes critical fit flush-cutting easy.
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Buyer Reviews
Average Buyer Rating:

Customer Rating: 
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Flush Cut Off Saw Blade
I purchased this saw blade as well as the Bosch flush cut-off saw.
Together they worked out very well. It is the only saw that would make a straight cut right up against the door frame and door entrance sill.
When the door was installed the door sill was off set, on one end, about 1/4" and the door would not close completely. Insects, rain, and wind would enter the base edge of the door. Customer complained to me about it from time to time then I found this tool on Amazon.com that did the job instantly and provided a straight cut across the door sill and the door frame. The door then closed perfectly with no air gap. Customer was happy and so was I with this easy purchase via Amazon.com.
Customer Rating: 
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Smooth cut, but slow; and the blades wear out quickly
Bosch FS200ABU 7-7/8-Inch 20 Teeth per Inch High Alloy Steel Flush Cutting Fine Tooth Power Handsaw Blade
I've used these blades for numerous construction projects with a Bosch 1640 saw. E.g., cutting off the bottom of door trim, to make room for ceramic tile. They have fine teeth, which makes for a smooth, but annoyingly slow cut. Next time, I'll get the blades with more teeth per inch, which cut faster.
The biggest con with these 20 teeth-per-inch blades is they wear out way too fast. This makes their initial high cost downright exorbitant. If they lasted longer, they'd deserve 4 or 5 stars.
Here's a tip to cutting the bottom of door trim. To cleanly remove 1/2" of trim, put a /2" piece of plywood on the floor next to the trim, and let the saw blade slide on the plywood as you cut.
Customer Rating: 
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Works Fine
I used it to cut door jams for a flooring project. Very clean cuts, no sanding needed to dress up edges. Like another reviewer said, it's a good idea to have a spare on hand, it gets dulled pretty badly when you hit the hidden nails. Easy to attach/detach/swap sides.
After some trial and error, I used the "regular" (not fine tooth) blade to finish the cut when I hit a nail. It seemed to cut the nails quicker and didn't get dulled as badly. Start your cut with this blade and if you hit a nail switch to the "regular" blade. You'll still have a nice clean cut.
Customer Rating: 
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Excellent!
Great accessory for the Bosch 1640VS power saw, makes really smooth cuts. I used mine new for cutting door frames, smooth as silk!