5PCS HSS Step Steel Cone Drill Titanium Bits Set Kit Hole Cutter + Aluminum Case

Features

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

Specifications

Material: HSS Drill 4241

Black chamfer drill body material: steel 45

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: 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")

# 5: 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")

    Drill                     Shank Diameter

1/4-1-3/8                         9mm

3/16-7/8                          9mm

1/4-3/4                            9mm

1/8-1/2                            6mm

3/16-1/2                          6mm

Package Size: 15cm * 10.5cm * 4.2cm (L * W * H)

Weight: 450g

Package

1 x 3/16" to 1/2" Step Drill

1 x 1/8" to 1/2" Step Drill

1 x 1/4" to 3/4'' Step Drill

1 x 3/16" to 7/8" Step Drill

1 x 1/4" to 1-3/8" Step Drill

1 x Aluminum Box