Your electric drill has this thing called a 'chuck'. The chuck is the piece that holds your drill bit in place. How many different sizes do these chucks come in?
Drills are available in 1/4-inch, 3/8-inch and 1/2-inch sizes. The measurement refers to the size of the drill chuck — the part that holds the bit — and indicates the maximum-diameter bit shank that fits the drill.
Asked by Cliff Johnson · Last updated 4 weeks ago · 149.6K views