The Milwaukee 20-piece Titanium Drill Bit Set features a titanium coating that withstands high temperatures, reduces friction, and gives increased wear resistance. The 135 degree split point tip starts fast, self-centers, and reduces "walking". Bits 13/64 in. and larger feature the 3-flat Secure Grip Shank. The 3-flat Secure Grip Shank prevents the bit from slipping in the chuck.