RBQL044610 3/8-Inch Radius Brazed Router Bit 1/2-Inch Shank with Bearing

Used to fabricate Granite Countertops, particularly undermount sink edge profiling. First time ever working with Granite and on a Router, this bit is very forgiving and almost idiotproof. You literally can't avoid making a perfect straight and smooth edge. The bearing is set in about 1/64", which somehow covers up any small bumps or minor roughness in your cut-out. Used diamond segmented blade and grindger from Harbor Freight to cut-out (Don't try to force pieces out. Cut completely through). Then used Toolocity VBDW0020 2-Inch x 2-Inch Brazed Diamond Coarse/Drum Wheel, from Amazon on grinder to smooth. You will still need a $165 plus Wet Grinder to use polishing pads, but this bit should same you some time as it yields a VERY clean and smooth rounded edge.

No idea this was a industrial bit as it does not fit a standard router, now I have to send it back and the job will not get done in time for Xmas!! Not happy.

I needed to round over about 10 linear feet of stone for my hearth. Worked perfectly but by the last two feet or so had to slow it up a lot. Did a nice job but consider it a use and throw away bit. Maybe using water would extend the life? It was cheap enough though.

It had two large dimond flakes that made deep grooves. Once I took them off with my other dimond cutter it did a good job.

I made my own granite countertops out of tile and used this bit in a standard woodworking router to profile the edges with outstanding results! They cut smooth and stayed sharp. Great product.

I used this bit to make travertine and marble bullnose tile for my bathroom project. I used it on my Bridgeport Mill with a shopvac to collect the dust. The same could be done with a router. It saved me hundreds of dollars. I used 3M diamond pads to finish and polish the edges after shaping with this bit.

Cut the edges of granite tiles I put on my counter top. Worked fine

Used on bluestone. Worked great. Did 120' with water and still looks new.