Double Square Rotary Broaches are made to your exact specifications with quick delivery time. As with all Slater Tools Rotary Broaches, Double Square Rotary Broaches can be produced from hardened high speed M2 steel, PM4 or T15 cobalt. TiN, TiCN, and TiALN coatings are available for all rotary broaches. Pressure relief vent holes, spun ground diameters, corner radii, special tolerances, quantity discounts and resharpening are also offered.