Mini Drill Chuck 1/4' Hex Shank for Micro Drill Bits ...
The mini drill chuck 1/4' hex shank as provides will only support a VERY small 1/32' drill bit, BUT you can alter it by reaming out a small portion of the holding area and it will accept up to 1/8' drill bit. When the shank arrives it will be very tightly closed. Remove the shank closing cap.
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