5pcs Titanium Step Drill Bit Set 50 Sizes Cobalt Step Drill Bits for Metal Wood Plastic Sheet Stainless Steel Metric Step Drill Bit with Aluminum Case 5pcs

5PCS Large High Speed Steel Cobalt Multiple Hole 50 Sizes Step Drill Bit Set: Usage: Drilling holes in thin mild steel, aluminum, copper, brass, plexiglass, wood, etc. Features:: #1?Cobalt high speed steel(M2) along with the titanium coating #2?This one set replaces 50 individual drill sets. Comprised of high quality, long life high speed steel. #3?Self starting - no need for a pilot hole. Cobalt coated to reduce friction and run at cooler temperature. #4?Automatically deburrs holes as you drill. #5?135° SPLIT POINT TIP AND TWO-FLUTE DESIGN: increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily. Sizes:: #1: 3/16" to 1/2" 6 Steps (3/16'', 1/4'', 5/16", 3/8'', 7/16'', 1/2'') #2: 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'') #3: 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") #4: 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") #5: 3/16" to 7/8" 12 Steps (1/4'', 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8") Package includes: 5x Step Drill Bit Set 1x Aluminum Case