Draper Titanium Nitride Coated HSS Drill Bit Set 15 Piece High speed steel straight shank drills coated with titanium nitride for longer life Display packed in soft grip plastic case Contents: 1.5 x 2, 2.0 x 2, 2.5 x 2, 3.0, 3.2, 3.5, 4.0, 4.5, 5.0, 6.0, 8.0 and 10mm