This does not fit a normal drill. It has a square taper shank (square end bit) that is designed for a hand brace/drill (e.g. #49 #48).
Newtown Tool Library
https://www.newtown-tool-library.com
9 Constable Streethttps://www.newtown-tool-library.com
in between the playground and Newtown Library/Smart Newtown.
Wellington, 6021
New Zealand