MADE IN AMERICA- High quality, Industrial Grade Professional Ball-Hex (allen) Bits made in the U.S.A. EKLIND Ball-Hex (allen) Bits are used to drive internal hexagon socket (allen head) fasteners FAST AND EFFICIENT- The EKLIND Ball-Hex (allen) Bits work at up to a 20 degree angle for access to hard to reach socket-headed fasteners OPTIMUM STRENGTH- These EKLIND Bits are made with EKLIND Alloy Steel that is heat treated, quenched and tempered for optimum strength, torque and ductility for safety and coated with a rust resistant finish 1/4" drive suitable for use with a wide variety of tools.