Metric β Unfortunately, small differences in size make a big difference. I wanted to use them to store sockets. 10mm that should be 3/8 is not. You can HEAD them in hole 3/8. But if you put a 3/8 head on it, you'll need layers to remove it. I have used real SAE 3/8 dowels several times for this application with excellent results. They were metric and didn't fit. Close, but no cigar. Pretty good quality for the price. So far only 1 bad (chipped). I just wish they weren't metric.
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