Drill America 1/16 1/2 Cobalt Jobber Drill Bit Set, Shatter Proof Case, 29 Pieces (1/64 Increments). Pieces In Set: 29 Material: Cobalt Finish: Gold Shank Type: Round Style: Jobber Cutting Angle: 135 Point Type: Split Point Number Of Flutes: 2 Cutting Direction: Right Hand. 1/64 Size Increments M35 Cobalt Drills Are Are Effective In Drilling Tough, High Tensile Strength Materials Like Stainless Steel, Inconel, And Titanium 135 Degree Split Point Tip For Self-Centering And Reducing Thrust. Compared To A Conventional 118 Degree Tip, These Drills Wont Go Walking On You. Manufactured To Aerospace Standard 907 Display High Red Hardness, Permitting Speeds Up To 30% Greater Than With Conventional M2 High Speed Unique Round Drill Index Combines Form And Function Into One Beautifully Designed, Easy To Carry Drill Set. Sizes In Set: 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4, 17/64, 9/32, 19/64, 5/16, 21/64, 11/32, 23/64, 3/8, 25/64, 13/32, 27/64, 7/16, 29/64, 15/32, 31/64 And 1/2.