Titanium-coated bits withstand high temperatures for increased wear resistance. The 135° split point is self-centering to reduce "walking." 3-flat shank is specially designed to prevent bits from turning in the chuck. Includes 20 most-popular sizes and indexed plastic case.Includes (qty.) 20 Material Titanium Coated Diameter (in.) Variety Includes 20 Bits and 1 Case Case Included Yes