# EZARC M35 Cobalt Step Drill Bit Set, 3-Piece, 1/8–7/8 in., 1/4 in. Hex Shank

The EZARC M35 Cobalt Step Drill Bit Set is a three-piece stepped-bit kit listed for hole sizes from 1/8 to 7/8 inch, with a 1/4-inch hex shank. Its listed M35 cobalt steel and AlTiN coating are aimed at sheet-metal work, but the manufacturer specifies thickness limits and recommends lubricant during continuous use.

- [Original product page](https://best-deals.pro/product/ezarc-m35-cobalt-step-drill-bit-set)
- [View offer](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- Market: US
- Language: en-US
- Currency: USD
- Brand: EZARC
- Category: Tools & Garden > Power Tools > Drills & Drivers
- Price: 53.97 USD
- Previous price: 59.97 USD
- Discount: 10%
- Price checked: 2026-11-13T05:38:02.538Z
- Rating: 4.3 / 5
- Reviews: 426

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- Three step drill bits are listed for a 1/8–7/8-inch size range and organized in a compact case, according to the listing.
- M35 cobalt high-speed steel and AlTiN coating are manufacturer claims. The listing also describes triple spiral flutes and a C-profile cutting edge.
- The maker specifies metal sheet up to 1/8 inch \(3 mm\) and stainless steel sheet up to 1 mm thick.
- For continuous operation, the maker recommends cutting oil or coolant and cautions that startup speed may be slower.

## Pros

- Three bits and a stepped design cover a listed range of hole sizes without requiring a separate bit for each step.
- A 1/4-inch hex shank and spiral flutes are specified for the set.
- The manufacturer identifies material thickness limits and recommends lubrication, providing useful operating boundaries.

## Cons

- The stated capacity is limited to metal sheet up to 1/8 inch and stainless steel sheet up to 1 mm, which may rule out thicker stock.

## Specifications

### Identity
- Brand: EZARC
- Part number: 80379001
### Materials and finish
- Material listed: Cobalt Steel
- Finish listed: Titanium Nitride
### Shank and cutting
- Shank type: 1/4" Hex Shank
- Cutting diameter: 0.75 inches
- Flute type: Spiral
- Number of flutes: 3
### Listed applications
- Surface recommendation: Metal, Plastic, Stainless Steel, Wood

## Before you buy

- The listing identifies the finish as both Titanium Nitride and AlTiN, and says both triple-and-spiral flute and spiral flute. It also lists a 0.75-inch cutting diameter alongside a 1/8–7/8-inch set range and a 0.75-inch minimum bore diameter. Confirm the size progression and coating description for the selected listing. Use lubricant or coolant for continuous operation, and observe the stated material-thickness limits.

## In the box

- Storage case (Check selected pack): The feature text mentions a compact case, but no explicit package inventory is provided.

## A good fit for

- DIYers and tradespeople drilling stepped holes in thin metal or stainless-steel sheet within the stated thickness limits.
- Buyers seeking a compact three-bit set with a 1/4-inch hex shank for metal, plastic, or other listed surfaces.

## Less suited to

- Anyone needing to drill metal sheet thicker than 1/8 inch or stainless steel thicker than 1 mm, based on the stated limits.
- Buyers who require confirmed performance in an impact drill. Customer feedback includes a report of difficulty using one that way.

## Customer feedback

Customer feedback praises sharpness and cutting performance, including a report of cutting 1/2-inch mild steel, but other customers report bits breaking within a week. Comments also differ on value, and one customer reports difficulty using the bits with an impact drill. Those experiences matter because the listing itself limits sheet thickness and calls for lubricant during continuous work. They are customer reports, not confirmation of performance or durability across uses.
- Positive themes: Customers describe the bits as sharp and report good cutting performance.
- Negative themes: Some customers report bits breaking within a week of use.
- Mixed feedback: Customers differ on value, and feedback on drilling capacity includes a report of difficulty using the bits with an impact drill.

## Frequently asked questions

### What material thickness does the manufacturer specify?
The listing says the bits are suitable for metal sheet up to 1/8 inch \(3 mm\) and stainless steel sheet up to 1 mm thick.
### Does the listing specify a coating?
It gives inconsistent coating names: Titanium Nitride in the details and AlTiN in the feature text. Confirm the coating description on the selected listing if it matters to your purchase.
### Should I use lubricant while drilling?
The manufacturer recommends adding cutting oil or coolant before continuous operation. Its instructions also suggest low speed and light pressure.
### Is the included case confirmed?
A compact storage case is claimed in the feature text, but the supplied package information does not provide an explicit contents list.

## Offer details

- The manufacturer recommends cutting oil or coolant before continuous operation and advises low speed with light pressure.

## Alternative options

- [LIBRATON Four Spiral Flute Step Drill Bit Set 1/8"-7/8", M35 Step Bits \| Cobalt AlTiN Coated Step Bits, 1/4" Hex Shank for Metal, Stainless Steel, Aluminum, Plastic, 3PCS](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- [EZARC 4-Inch 8TPI Carbide Reciprocating Saw Blades, 3-Pack \| 50X Longer Life, for Thick Metal, Individually Welded Precision-Ground Carbide Teeth, Universal 1/2-Inch Shank](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- [5PCS Step Drill Bit Set-HSS Titanium-Coated, Dual Straight Flutes \| 50 Hole Sizes f...](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- [EZARC Obsidian Carbide Reciprocating Saw Blades 6" 8TPI Thick Metal, 3-Pack \| TiAlN Carbide Teeth, Up to 100x Longer Life, 50% Higher Cutting Efficiency, Cuts Stainless Steel, Rebar, Angle Iron](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- [1/8"-7/8"\(3pcs\) M2 Four Spiral Flute Cobalt Step Drill Bit Set \| M2 HSS Step Drill ...](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- [3Pcs M35 Cobalt Step Drill Bit Set, 1/8"-7/8", 1/4" Hex Shank \| TiAlN Coating; Four...](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- [Matework 4 Spiral Flute Step Drill Bit Set, M35 Cobalt Unibit 3Pcs \| Step Drill Bit](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- [Lichamp Jumbo 2-3/8" Unibit Step Drill Bit, 12 Sizes, 1/4" to 2-3/8", C5BK \| Extra Large Drill Stepper Bit for Hard Metal Heavy Duty, 118°Drill Angle, Spiral Grooved](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- [EZARC 16PCS Bi-Metal Hole Saw Kit, 3/4"-2-1/2", Cuts Multi-Materials \| M42 Bi-Metal with 8% Cobalt, 10 Hole Saws, 3/8" and 7/16" Arbors, Pilot Drills, 4/6 TPI, for Thin Metal, Plywood, PVC](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- [M2 Step Drill Bit Set, 1/8~1-3/8" 5Pcs 4 Spiral Flute AlTiN Coated Step Bit \| Versatile Size,Upgraded 3/8" Shank for Higher Torque,1/4" Hex Shank,for Soft Metal, Sheet Iron, Aluminum, Wood, Plastic](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- [LU&MN M35 Jobber Drill Bits, 3/8", 10 Pcs \| M35 Cobalt HSS, Ultra Hardness & Heat-Resistant, 135° Split Point, Straight Shank, For Cast Iron, Aluminum & Other Metal](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- [5PCS Spiral Flute Titanium HSS Step Drill Bit Set for Metal Unibit \| 50 Sizes Spira...](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)

## Add-ons

- [Jerax tools 1/4"-3/4" M2 Step Drill Bit Unibit for Hole Drilling 5 Sizes \| M2 HSS; Hole Drilling in Extra Thick Material/Panel/Plate, Stainless Steel, Copper, Aluminum, Wood, Plastic](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)
- [toolant M35 Cobalt Step Drill Bit, 1/4"-3/4", TiAlN, 1/4" Hex Shank \| M35 Cobalt HSS; TiAlN Coating; Four Spiral Flutes; 1/4" Hex Shank Unibit; Metal/Stainless/Aluminum/Plastic](https://best-deals.pro/visit/ezarc-m35-cobalt-step-drill-bit-set)

## Images

![EZARC M35 Cobalt Step Drill Bit Set, 3-Piece, 1/8–7/8 in., 1/4 in. Hex Shank — 1](https://best-deals.pro/i/srnaIIl_5HMskdBS9Fd-HbQSuD015_YAKjmB5I4IqrcXJ6bEc-TYF--MSPl0wgkqR2k7ZMcajhPv_Z4SmjgG-W5DURs6VuJ36BpDV6mclh4aUlq-qilV.jpg)

![EZARC M35 Cobalt Step Drill Bit Set, 3-Piece, 1/8–7/8 in., 1/4 in. Hex Shank — 2](https://best-deals.pro/i/CzJmY1N4RPbcaIilo-Nw2A_yIKoDOHxp40YQcjAkto5KZGrCrCRbdNxUtD7JtC1801AHGrHjoDw0CKd6j46KDjZRW49A41-B0y_4ATcAoiS32ace1pUJ.jpg)

![EZARC M35 Cobalt Step Drill Bit Set, 3-Piece, 1/8–7/8 in., 1/4 in. Hex Shank — 3](https://best-deals.pro/i/V1bb085QD_A7FRfMbJ-nZFSPDRVM2va7Y8MVsU6c0mweT5mtaW99_NLkxUGgdTRcaGiPjlIckCSg7znyY8ET0YJ19wvPfLSQiG2cD04YDDR6d4NurfjH.jpg)

![EZARC M35 Cobalt Step Drill Bit Set, 3-Piece, 1/8–7/8 in., 1/4 in. Hex Shank — 4](https://best-deals.pro/i/UEn8yO2O_zhX6tcfLdwyuWK7NGxeaBElm9THskmgThGfGvQ029kII9uYK3U4jtJ7Sv8EQQy0RuINK_-pAoikF9-Djtt_m8aQIKh7vlDaEmrdausQFr4n.jpg)

![EZARC M35 Cobalt Step Drill Bit Set, 3-Piece, 1/8–7/8 in., 1/4 in. Hex Shank — 5](https://best-deals.pro/i/Etm5BHBMN8jIBY_X3UfTLfzWrKRjA7m515N9UxBgekAty4vWcBAQQuTpFXhqmMluGdW3eh4ZEtj7gL6LWq843UeAien2oPOxFiys6xC7eMbpQdeM5pza.jpg)

![EZARC M35 Cobalt Step Drill Bit Set, 3-Piece, 1/8–7/8 in., 1/4 in. Hex Shank — 6](https://best-deals.pro/i/GLru95nbRfb1I6R0m0lU81_d-O2JoUoQ2mDAbBDYN9J4QV2g2q8bBNTGRHcR9yEBKdLkkbmn44JNvPg0l99IP8Wbxw0DB7ow9oxPLdJjm9R0xfWO-VRo.jpg)

![EZARC M35 Cobalt Step Drill Bit Set, 3-Piece, 1/8–7/8 in., 1/4 in. Hex Shank — 7](https://best-deals.pro/i/3X6eX4E4arogIAXDJfltO9Q_sqbH88RD8CmQof4-ZnOzxxtcuf_pFxodFzgGi68eu6vIzDkFaqFEZT6yEfUAjhPYKYlPfVpl_9bTEIk3Ug4iFz0-PFrK.jpg)