135 deg. split point for no 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 in set: 1/16",5/64", 3/32", 7/64", 1/8", 9/64", 5/32", 3/16", 7/32", and 1/4". Packaged in a molded plastic case.