SKU: 185288209

EZARC Step Drill Bit 4-20mm M35 Spiral Flute Unibit Step Drill Bit, 1/4" Hex Shank For Metal, Wood, Altin Coated

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Description

EZARC Step Drill Bit 4-20mm M35 Spiral Flute Unibit Step Drill Bit, 1/4" Hex Shank For Metal, Wood, Altin CoatedStep Drill Bit for Metal, M35 Cobalt Step Drill Spiral Flute Unibit Step Drill Bit (4 20mm) Wear Resistant AlTiN Coated, 1 4" Hex Shank for Metal, Stainless Steel, Aluminium, Plastic ABOUT THIS ITEM 9 Step SizesSpiral flute design, featuring 9 distinct steps from 4 to 20 mm, offers seamless and effective drilling across various thicknesses, eliminating the need for multiple bits. Includes 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm.

Step Drill Bit for Metal, M35 Cobalt Step Drill Spiral Flute Unibit Step Drill Bit (4-20mm) Wear-Resistant AlTiN Coated, 1/4" Hex Shank for Metal, Stainless Steel, Aluminium, Plastic

【ABOUT THIS ITEM】

【9 Step Sizes】Spiral flute design, featuring 9 distinct steps from 4 to 20 mm, offers seamless and effective drilling across various thicknesses, eliminating the need for multiple bits. Includes 4 mm, 6 mm, 8 mm, 10 mm, 12 mm, 14 mm, 16 mm, 18 mm, 20 mm.

【AlTiN Coating】Step bits coated with aluminium titanium nitride, rated at 89HRC for exceptional hardness and thermal properties. This coating offers superior resistance to heat, wear, and corrosion, with high adhesion and low friction. Laboratory tests show it more durable than steamed black oxide coating for longer bit life.

【C-Profile Design】EZARC Step Drill Bits feature a triple-flute design for enhanced stability, effectively addressing issues of deviation during the cutting process. Additionally, 'C-profile' cutting edge ensure smoother cutting and 2X increase in cutting speed.


 

【M35 HSS Step Drill】M35 cobalt high-speed steel achieves high levels of hardness and wear resistance through appropriate heat treatment. Its toughness and bending strength surpass those of standard high-speed steel, making this step drill bit more suitable for cutting harder materials, such as mild steel, medium hardness steel, stainless steel.

【Please Note】Follow these tips to keep your drill in top condition: add cutting oil or spray water to cool during continuous use, the start-up speed will be slower due to the larger cutting angle, any quality problems, please feel free to contact us.

 

【Tips】

1.How will AlTiN coating affect the performance of step drills?

AlTiN Coating, with a hardness of 89 HRC, offers excellent hardness and thermal properties. It provides great resistance to heat, wear, corrosion and can withstand temperatures up to 900°C.

2.What types of metal can I cut with ezarc step drill bit?

You can use EZARC step drills to cut or drill through various metals, including aluminium, brass, copper, cast iron, galvanised pipe, stainless steel, and low-carbon steel.

3.How do I properly use this step drill bit?

Ensure the chuck is securely tightened on the power tool. Use low speed and apply light pressure on the workpiece until reaching the desired depth. Lubricate the cutting edge with oil or a water-soluble lubricant to reduce friction, heat, and debris.

4.Are there any requirements for the thickness of the materials used?

The thickness of metal plates should not exceed 3mm, and the thickness of stainless steel plates should not exceed 1mm.

 

 

 

 

 

 

 

 

 

 

 

 

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 185288209

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Debby hall
Lowell, US
★★★★★ 5
Ipad
Color: Sky Blue
Quality is amazing , fit and color. The price CANT be beat.
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Reviewed in the United States on May 25, 2026
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Cuba, US
★★★★★ 5
Great for iPad kids👍
Color: Sky Blue
I bought this in 2023/2024 and it's still intact and usable after hundreds of food stains and me accidentally dropping it. Thank you for protecting my iPad, very great product. Otherwise, my mom would've beat my ass for breaking the iPad. PSA, the case looks the same as the picture😛
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Reviewed in the United States on May 28, 2026
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Austin & Bre
Lake Worth, US
★★★★★ 5
Great case for the price! Love the color!
Color: Sky Blue, Color: Sky Blue
I’ve had this case on my iPad (A16 11th gen) for a few months now and it’s held up really well. It still looks good with only a few minor scuff marks, which is expected with regular use. The front cover has a slight magnetic feel, so it stays closed nicely, and I like that it folds back to prop the iPad up for watching or typing. It’s not super bulky but still gives good protection. Also has a pen holder spot on the side! Overall, it’s a great affordable option if you want something simple, functional, and durable without spending a lot!
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Reviewed in the United States on April 13, 2026
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Shanise
San Leandro, US
★★★★★ 5
Cute
Color: Purple
Fits like a glove Lightweight and well made easy to hold not slippery. Looks very clean and seemless. Worth every cent
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Reviewed in the United States on May 3, 2026
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connie levline
West Palm Beach, US
★★★★★ 5
Quality case
Color: Black
Great protective cover for the price Fits perfectly with no slipping Has a bit of weight to it but not an issue I bought the black cover and so far holds up well against fingerprints and smudges. Shipping was prompt
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Reviewed in the United States on May 14, 2026

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