Not very good. They don't fit on the BNC of my Agilent signal generator. The metal wrapped around the end of the insulator appears to be too thick, or the insulator is too long. I can connect it to the signal generator, but I can't turn the bayonet far enough to lock it properly. I've hooked up dozens of BNCs to this generator over the years, this is the first one I've seen that works. It fits.
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