Screwdrivers come in various sizes to match different screw sizes. Common sizes include:
- Flathead: Blade widths range from 2 mm to 10 mm.
- Phillips and Pozidriv: Sizes range from #0 (smallest) to #4 (largest), with #1 and #2 being most common.
- Torx: Sizes range from T1 (smallest) to T100 (largest), with T10, T15, and T20 being common.