IRD Defiant Crankset is designed to be reminiscent of the Campy Strada and Sugino Mighty cranks of the 1970's.
Cold forge these before adding the fluting details.
This makes for a stronger, more reliable design.
+ 144BCD with a 46t alloy chainring
+ Fluted, CNC machined
+ Cold forged arms
+ 6061-T6AL arms with 7075 AL chainring
+ JIS taper, 110mm spindle recommended for 42mm chainline