Step Drill Bits 5pcs HSS Steel Cone Titanium Bit Set Kit Automatic Centre Punch

Product Information:

Material: HSS Drill 4241
Black chamfer drill body material: steel 45
Sizes:
a. Drill : 3/16" to 1/2" 6 Steps , Shank Diameter :6mm
(3/16 '', 1/4 '', 5/16 ", 3/8 '', 7/16 '', 1/2 '')
b. Drill : 1/8" to 1/2" 13 Steps ，Shank Diameter : 6mm
(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 '')
c. Drill : 1/4" to 3/4'' 9 Steps，Shank Diameter : 9mm
(1/4 '', 5/16", 3/8 ", 7/16", 1/2 ", 9/16", 5/8 "11/16", 3/4 ")
d. Drill : 3/16" to 7/8" 12 Steps，Shank Diameter : 9mm
(1/4 '', 5/16 ", 3/8", 7/16 ", 1/2", 9/16 ", 5/8" , 11/16 ", 3/4", 13/16 ", 7/8")
e. Drill : 1/4" to 1-3/8" 10 Steps ,Shank Diameter : 9mm
(1/4' ', 3/8 ", 1/2", 5/8 ", 3/4", 7/8 ", 1 ", 1-1 / 8" 1-1 / 4 ", 1-3 / 8")
This set replaces 50 individual drill bits. The 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.
SELF STARTING - No need for a pilot hole.
Titanium coated to reduce friction and run cooler
Large bit has 3-sided shank and small bits have hex shank to prevent slip in drill chuck
Automatically deburrs holes as you drill
Long Life True M2 high speed steel
Apply to with a clamp or joint drilling machine, suitable for drilling in the hardwood and wood floor, machine screw for the wood screw.
Includes protective padded aluminum case

Package Include: