Made specifically for use with the self-centering Euro-Bit Holder (Search SKU: ELEB) to help the tool accept a 7/64" bit for drilling pilot holes for #5 and #6 wood screws.
The Euro-Bit requires a boring bit with a 10mm*40mm long shank or an adapter* for a 7⁄64" twist drill bit. Other bits will not work in the tool.