Irwin 7/16 In. x 5-1/2 In. Titanium Drill Bit

135 Deg. split point for non-slip starting on hard materials. Parabolic flute design for improved heat dissipation and increased life. Industrial M7 grade steel for high-performance drilling in metal, wood, and plastic. Extra hard titanium coating for maximum service life. Jobbers length. Sizes 7/16 In. and 1/2 In. have a 3/8 In. reduced shank.