Step Drill Bit Set, 5pcs HSS Cobalt Titanium Grooved Step Drill Bit Set Tools Multiple Hole 50 Sizes Stepped Drill Bits with Aluminum Case, Two-Flute Design, High Speed Steel and 3 Side Shank Design

Description

Step Drill Bit Set, 5pcs HSS Cobalt Titanium Grooved Step Drill Bit Set Tools Multiple Hole 50 Sizes Stepped Drill Bits with Aluminum Case, Two-Flute Design, High Speed Steel and 3 Side Split Point Tip Design Sizes: #1: 3/16" to 1/2" 6 Steps (3/16", 1/4", 5/16", 3/8", 7/16", 1/2") #2: 1/4" to 3/4" 9 Steps (1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4") #3: 1/4" to 1-3/8"' 10 Steps (1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8") #4: 3/16" to 7/8" 12 Steps (3/16",1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8") #5: 1/8" to 1/2" 13 Steps (1/8", 5/32", 3/16", 7/32", 1/4", 9/32", 5/16", 11/32", 3/8", 13/32", 7/16", 15/32", 1/2") 50 SIZE IN 5. The bits set includes five standard step drill bits that can replace 50 individual drill bits, you can process 50 different kinds of diameter holes with the five pieces. Features: 1. Compatible with 1/4", 3/8", and 1/2" shank sizes to cover a wide range of drilling requirements; 2. High speed steel for longer service life; 3. 3-sided shank prevents slip in drill chuck; 4. Double cutting blades design enables a faster and smoother cutting; 5. Cobalt added reduces friction and lasts longer than those which does not contain cobalt bits; 6. The sharpness and titanium coating ensure easily cut through most sheet metal. We promise you 60 day of free change and return, 12 month product quality guarantee. If got any question, please contact us first and we will offer you a satisfactory answer.