" There are no strangers here; Only friends you haven't yet met." -William Butler Yeats
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Hello yadda and John k. I had these 3 for a while , only one is an Allen brand, until I found the group from the flea. Also trying to complete the Allen brand T-handle set!
Hello, skip . Yes, across the flats, either in the broach, or on the shank. I use a digital micrometer that gives a fractional readout. If you have a way to measure accurately with a different type of micrometer, I can do the conversion. Are you going to Donnelly's? I will be set up there if you want to bring them along