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)

The bit cuts well and leaves a smooth surface ,

I like the way it cuts

The bit snapped in half during first use. Still not able to find the other half. No injuries, so could have been much worse, but not impressed.

I was pattern routing 1/2 and 3/4 Oak removing 1/32 stock to finish. The router bit did not cut smooth and ripped out chunks ruining several pieces before I gave up and purchased a similar bit made by Whiteside which performed perfectly. The Whiteside bit was almost twice the cost but worth every penny. I might add the guide bearing was faulty and I replaced it with one from another router bit. Very disappointed.

I bought two bits as replacements and a couple minutes into using it the clamp above the bearings and one of the bearings flies off! I was lucky enough to find both pieces and it was easy enough to put back together (which is telling) only for it to happen two more times, resulting in loss off parts. So, basically I spent $21 for three minutes of work, plus associated anger and disappointment.

I used this bit to trim 3/8 drywall around a door. It cut 4 ft of drywall then the bit broke in the center of the shaft. I didnt expect it to be ultra-durable, but this is terrible. Not worth the risk of the bit exploding during light use.

This bit works amazingly! First use was to cut some kayak hatch holes, this bit sliced through the plastic smoothly and had no chatter just a clean easy to guide cut. Ive also used it on some wood projects and it performs equally well leaving clean smooth cuts that need almost no sanding. Its also very sharp you can feel the cutting edge on the bit so be careful taking it out of the protective case. Im very happy with the performance so far and will be ordering more for my wodshop.

I use it for routing 3/16 beadboard. Waaay better than the formica bit I was using.

Cut very clean and without a lot of drag on the router motor...this is partially due to the small diameter, but also a sign of good design and sharp cutting edges.

It’s okay for the price. Ended up wearing out and getting dull and tearing out the wood after repeated cuts on soft wood. Ended up going through 3 of these just to finish the job I was doing.