
Because of the sheer weight of numbers, square drives are still measured in imperial units, the most common are listed below. There are also 5/16" for screw bits only, 1" and more for trucks etc.
1/4"
Last updated on 2025-05-05 13:37
3/8"
Last updated on 2025-05-05 13:37
1/2"
Last updated on 2025-05-05 13:37