Carbide Burr bits good source?

Thanks Mike. Kim
check out that "Benchmark Abrasives" and compare to Mc Master.
I haven't been able to get back to the project that prompted this post, crazy busy with other crap.... I got burrs from Fastenal and long ones from this Benchmark place, plus a few Snap on ones I have had for a while and a few who knows where they came from.... but before the ones from Fastenal and benchmark I had several of just a couple of varieties of them... and all short versions. I'm neck deep into trying my hand at porting a slant 6 head, I have wrecked 1 seat for sure, hopefully going with o/s valves will allow for that. will probably have to have inserts put in by the time all is said and done.