Step Drill Kit,Knoweasy 5PCS HSS Titanium Step Drill Bit Set with Automatic Center Punch and Multiple Hole 50 Sizes of High Speed Steel Step Drill Set with Aluminum Case

$21.99 $43.99 You Save 50% ($22.00)

✅【What you get:】Includes five standard step drill bits with center punch,which can replace 50 individual drill bits, you can process 50 different kinds of diameter holes with the five pieces.
✅【Product Feature:】The center punch delivers an automatic,high-impact,spring-loaded strike through adjusting the cap; its brass body has a deeply knurled surface for nonslip control; and the carbide tipped bit makes the center punch 10 times stronger than normal one;protective aluminum case makes the drills not easy to dull.
✅【HSS Titanium Coating:】High speed steel along with titanium coating ensures outstanding durability and sharpness,can reduces the friction,runs cooler.
✅【Application:】Perfect for home repairs and light jobs such as drilling holes in plastic, aluminum, copper, iron sheet and many other types of sheet metal (excluding steel or any other harder metal
✅【Product Guarantee】Your customer satisfaction and 12 months warranty of step drills can be guaranteed.

Feature:

Double cutting blades design enables a faster and smoother cutting
Self starting - no need for a pilot hole. Cobalt coated to reduce friction and run at cooler temperature
Cobalt added reduces friction and lasts longer than those which does not contain cobalt bits
135° split point tip and two-flute design: increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily
Automatic Center Punch mark the hole locations and starts drill bits and screws, preventing wandering.
Exquisite Aluminum Case protects the drill bits not easy to dull and take the drills to anywhere more easily.
HSS( High speed steel ) is an alloy steel that composed of several kinds of carbide. It can withstand higher temperatures without losing its hardness and toughness, this property allows HSS to cut faster than high carbon steel.

Package Included:

#1:1/4" 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")
#2:3/16" to 7/8" 12 Steps (3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8")
#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")
#4:1/8" 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")
#5:3/16" to 1/2" 6 Steps (3/16", 1/4", 5/16", 3/8", 7/16", 1/2")

When use the drills, please always wear protective goggles, mask and gloves.
Don't touch it with your hand as the drill will produce heat when using, there will be the danger of burning.
Please pay attention that the product need to be cooled by water injection when you use the product drill metal plate.The step drill is easy to become soft because of high temperature. If you don't cool the drill, it will be scrapped quickly.
Our drills are HSS High-speed steel 4241, you'd better not use it to drill the material that is same as our product or drill the material that the hardness is higher than our product.

Feature:

Double cutting blades design enables a faster and smoother cutting
Self starting - no need for a pilot hole. Cobalt coated to reduce friction and run at cooler temperature
Cobalt added reduces friction and lasts longer than those which does not contain cobalt bits
135° split point tip and two-flute design: increases cutting speed with self-centering and prevents walking, clears chips faster and allows particles to escape easily
Automatic Center Punch mark the hole locations and starts drill bits and screws, preventing wandering.
Exquisite Aluminum Case protects the drill bits not easy to dull and take the drills to anywhere more easily.
HSS( High speed steel ) is an alloy steel that composed of several kinds of carbide. It can withstand higher temperatures without losing its hardness and toughness, this property allows HSS to cut faster than high carbon steel.

Package Included:

#1:1/4" 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")
#2:3/16" to 7/8" 12 Steps (3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 9/16", 5/8", 11/16", 3/4", 13/16", 7/8")
#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")
#4:1/8" 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")
#5:3/16" to 1/2" 6 Steps (3/16", 1/4", 5/16", 3/8", 7/16", 1/2")

When use the drills, please always wear protective goggles, mask and gloves.
Don't touch it with your hand as the drill will produce heat when using, there will be the danger of burning.
Please pay attention that the product need to be cooled by water injection when you use the product drill metal plate.The step drill is easy to become soft because of high temperature. If you don't cool the drill, it will be scrapped quickly.
Our drills are HSS High-speed steel 4241, you'd better not use it to drill the material that is same as our product or drill the material that the hardness is higher than our product.

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