suitable for the following screw heads:
- external hexagon 8 - 10 - 11 - 13 - 14 - 16 - 17 mm
- external Torx screw heads (E-type) E10 - E12 - E14 - E16 - E18 - E20 - E22
- inch sixes - external hexagon 5/16" - 3/8" - 7/16" - 1/2" - 9/16" - 5/8" - 11/16"
- as well as a holder for 6.3 mm (1/4") bits