12mm hex: 3mm, 1/8″, 4mm, 3/16″, 5mm, 5.5mm, 6mm, 1/4″, 8mm, 3/8″, 10mm
16mm hex: 11mm, 12mm, 1/2″, 14mm
Set for removing a broken stud or internal hex bolt by drilling a hole
Product NOT designed for air/impact wrench operation