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5pcs Step Drill Bit Set Hss Cobalt Multiple Hole 50 Sizes Cobalt Titanium Conical Carbide Drill Perforator Hole Cutter Tool

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Product Details
[50 Size In 5 PCS ]
The step drill bit set includes five standard HSS step drill bits that can replace 50 individual drill bits. A drill bit can be used as a substitute for multiple drill bits to meet different needs. With the five pieces step drill bits that we offered, you can process 50 different kinds of diameter holes, which greatly saves you a lot of trouble and space. That means, 50 sizes are condensed into five, making the drilling become more simple and practical.
[HSS and Titanium Coating]
Made of strong and durable high speed steel coated with titanium , high speed steel make it last longer than others, titanium coating ensure easily cut thin through steel sheets, aluminum sheets, copper & plastic & wood board and many other types of sheet metal with ease, and it can automatically deburr holes while drilling to keep the drill bit clean.
[Double Cutting Blades and Three-Sided Shank]
Double cutting blades and X-type openings design ensures a faster and smoother cutting; and 3-sided shank design prevents slip in drill chuck; Provided with small pressure and the sets can cut through the wood, sheet metal, steel and other surfaces
[135 Degree Spilt Point Tip and Two-Flute Design]
The split point tip is at 135 degrees to increase the cutting speed with self-centering and prevent walking, which allows you to cut faster. The two flute design also provides a faster and smoother cutting. And it clears chips faster, allows the material particles escape easily for a much more clean drilling operation. Just provided with small pressure, the step drill bit set can easily cut through most types of sheet mental.
[Hard Automatic Center Punch] The thimble head is made of carbide tipped bit and its impact resistance is 10 times that of ordinary center punches;before drilling, automatic center punch can mark the positioning hole to prevent the drill and the screw from sliding
# 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
Drill Shank Diameter
1 / 4-1-3 / 8
3 / 16-7 / 8
1 / 4-3 / 4
1 / 8-1 / 2
3 / 16-1 / 2
If you are a long-term user of drilling holes on metal plates, it is recommended to buy a harder drill bit (HSS-6542 / M35),From our shop.


Regarding Spanish warehouse delivery, if you are in an island zip code area, please note that the warehouse cannot provide island delivery services, and you need to choose to send it from China.

Item Specifics
Model Number: 
 Wood Drilling
DIY Supplies: 
 Core Drill Bit
Brand Name: 
Box size: 
 High Speed Steel
Product Name: 
 Step Drill Bit
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Location *Estimated Shipping Time
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Canada, Europe 10-20 Business days
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Asia 10-20 Business days
Africa 15-45 Business days
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