The hollow ground gunsmith screwdrivers, manufactured in the U.S., are versatile and adaptable for a wide range of applications. Each Forster screwdriver is crafted from premium-quality hardened steel. For screws used in Browning automatic receivers Hollow-ground blades with square faces are precisely designed to fit screw slots for optimal torque, ensuring no damage to the screw or chamfered work Constructed from premium-grade steel and meticulously subjected to precision heat treatment processes Each screwdriver is a standalone unit, designed without loose inserts that may slip in or out