Spiral Flush-Trim Router Bits，Solid Carbide Flush Trim Router Bit 1/4-Inch Shank Spiral Flush Trim Up Cut from TACKPRO (1/4 Shank Up-Cut)

Cut 3/4 mdf no problem

Didnt last. Used it twice and it was done.

These bits are very nice and work perfectly. I like.

WORKS GREAT with my dewalt drill. Easily cut through drywall and 1/2 inch plywood. By far a great investment. Used for 2 days straigh and bit is still sharp. Cuts are clean and concise.

The bit cuts well and leaves a smooth surface ,

Ive owned 4 or 5 routers and done quite a bit of work with them over the years (albeit not in a commercial or professional setting). Ive never seen a bit do this. I was cutting through soft cedar, moving reasonably slowly and SNAP! Scared the chocolate out of me. I see that most other buyers have given this product a good review, so its very possible that I just got a lemon. But this is my first experience with this brand of bits and it will certainly be my last. I would go with something more reputable. Your safety is not worth $15 in savings.

Great product

First cut I used it was amazing, then when I did my second cut the end of it heated up, Im not sure if it was a bearing or not as it doesnt spin now and not sure if it did before, but it discolored the bit. Im really sad about it because my first cut went so well. Also I was cutting 3/4 mdf applying very little pressure to the bit trying to let it do all the work

Less than 10 seconds into my first cut with pine plywood and it snapped in half. Very poor product

Sharp long lasting bit. We use them for cutting window and door openings out when framing. Used with a trim router. I havent used in my big router yet.