Irwin Fractional Tap and Hexagon Die -Best 5 Set

Although there are hundreds of different types of fasteners, most of them have the same basic design: a spiral groove inside a hole matches the threads on the outside diameter of a screw or bolt. IRWIN Hanson taps and dies are the tools used by professionals to create threads and solve the most challenging fastener applications. This set contains the top 5 machine screw and fractional sizes.