EKLIND hex keys (Allen wrenches) are used to drive internal hexagon socket (Allen head) fasteners
TAMPER RESISTANT- Security keys have a hole in the tip to fit over the pin in the socket head fastener and are used in areas where an assembly is accessible to the public, as a means to deter or prevent vandalism or disassembly
OPTIMUM STRENGTH- These EKLIND tools 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