1/2″ drive – 9mm (deep and shallow), 12mm (deep), 14mm(deep), and 21mm(deep). 1/4″ drive – 5.5 mm (deep), the rest are shallow: 5.5, 6, 9, 10, 11, 12, and 13mm. 3/8″ drive – 7mm and 8mm (both shallow).