Metric Reamer and Step Bit Holder
cults3d
When your new tools come loose in a bag.... https://www.amazon.com/gp/product/B01MULSQQD Reamer https://www.amazon.com/gp/product/B075958VBL Step Bit set These are not affiliate links. Other tools may fit this design, but it was specifically designed around the parts above. Update 2019/08/25: v12 adds a small lock ring to help hold the halves together. The original was getting loose even with zero clearance.
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