Shockwave Impact Duty titanium drill bits with Red Helix are engineered for impacts and drills. Titanium coating can be used in all drilling applications to give longer life versus black oxide. Designed with a Variable Helix with an aggressive 35 Deg. helix angle which ends at 15 Deg., the bits provide Rapid Chip Removal to limit heat buildup to stay sharper longer. The 135 Deg. split point tip delivers a precision start and prevents walking for fast, accurate holes. Includes: (2) 1/8 In. (48-89-4605), (1) 9/64 In. (48-89-4606), (1) 5/32 In. (48-89-4607), (1) 11/64 In. (48-89-4608), (1) 3/16 In. (48-89-4609), (1) 7/32 In. (48-89-4611), (1) 1/4 In. (48-89-4613), (1) 5/16 In. (48-89-4617), (1) 3/8 In. (48-89-4621). No. 48-89-4633: Pieces In Set: 10 pcs, Pkg Qty: 1, Package Type: Clamshell