Feature

●These hex shank step drill sets are made of titanium coated high speed steel with high hardness
●The step drill bit set adopts a groove design which helps the electric drill clamp it more tightly, preventing slipping and falling out during rotation
●Very suitable for drilling holes in a variety of materials, such as steel, brass, wood, and plastic
●Cobalt coated for smoother cooler cutting and deburring holes automatically when drilling
●Made of high quality material, strong and durable, long service life


Description

Specifications:
- This item is brand new
-This set replaces 50 individual drill bits. Two-blade layout allows for faster, smoother cutting The three-sided (TRI-FLAT) shank does not slip into the chuck of the drill. Cobalt coated for smoother cooler cutting
- Ti coated for reduced friction and cooling
- The larger bit has a 3-sided shank and the smaller bit has a hex shank to prevent the drill chuck from slipping
- Deburring holes automatically when drilling
- Long life high speed steel
- Aluminum case with protective pad included
-Package Size: 15cm * 10.5cm * 4.2cm (L * W * H)

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 Included:
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
Aluminum box x 1.