However, just by adding a screwdriver bit you will have converted it into a powerful screwdriver. Drilling with such a brace is done by turning the handle or center section in a circular motion. Pressure that is exerted by pressing down and turning with your hand gives it the power to drill. The head on the bit braces should be mounted on the ball bearing so it will turn easier from the rest of the brace. Usually braces are made with a ratchet control that allows you to make half turns if there is not enough room for a full circle to be completed.
Most models have extra space in the handle for storing drill points.
A spiral threaded shaft and chuck hold the bit in place while you do the work. Typically it is best to use these only for small jobs. Hand drills are only reccommended for light work that needs to be done. Start your screw hole with an awl by tapping gently with a hammer or a soft-face mallet. They can also be used to scribe a line on soft metal or wood.