I picked up a bag of new 15/16th counterbores at a swap meet with the idea that I could sell a few and keep a few for my tool pile - they are new, in the plastic tubes, 4 flutes, HSS, 1/4" diameter shank, they accept a 3/16 pilot. They appear to be exactly this item
Oh, and while I'm at it - I picked up a few Gulton West temperature controllers - 0-1000F or -18 to 580C - the ones I tested work - I thought I might use one on a ceramics oven or a heat treat oven some day, but I don't need a pile of them, so again, if you would like one, drop me a note - $15 (plus postage, sorry, but they won't fit in a little envelope)
to find me without annoying the rest of hte list, go to my web site below and you will find my email - I use an invalid address in USENET posts to reduce spam