Essential toolkit for electronics technicians, electricians, mechanics, and maintenance professional handling intricate repair tasks accuracy engineered 6.35mm ( 1 / 4 ") hexagonal drive ensures compatibility with various fasteners and tool in confined space while maintaining torques accuracy Multifunctional 6 piece sockets set combines design with industrial grades construction for unseamed conversion between automotive, appliance, and accuracy engineering applications for delicate equipment servicing, industrial machinery adjustments, and craft projects requiring efficient sockets drive Sturdy 1 / 4 " hexagonal Shank sockets Set crafted from premium alloy steel with induction hardening for long time wear resistance and excellent durability