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- Aug 31, 2004
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Frank check the bases when you get them, in the first pic it appears both may have the letter B etched on the bottom. That is how I mark the large bore base from the small bore. If both have the letter B change the needle in base number #1 to the needle without the groove in the knurled area. The grooved one is the fine taper needle that is used in the small bore bases (without the letter B). Both needles come with the OS in flight needle kit, if you don't have any of the non grooved ones let me know, I have a few.Mike, I'll take these both...
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