5pcs HSS Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Storage Case

Description 5pcs HSS Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Aluminum Case, This set replaces 50 individual drill bits. Two-flute design gives you faster, smoother cutting. 3-sided (TRI-FLAT) shank will not slip in your drill\’s chuck. Cobalt coated for smoother cooler cutting. Material: Steel Finish: Titanium Size: #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: 1 x 1/4-1-3/8 Step Drill 1 x 3/16-7/8 Step Drill 1 x 1/4-3/4 Step Drill 1 x 1/8-1/2 Step Drill 1 x 3/16-1/2 Step Drill 1 x Aluminum Box