$23.00

5Pcs/Set High-Quality HSS Cobalt Step Drill Bit Set, 50 Sizes with Aluminum Case

2 sold recently🏷️ JIGONG🏬 Sold by QST EXPress-01

✅ Cobalt HSS material offers superior heat resistance and long
✅ Multi-step design allows drilling numerous hole diameters wi
✅ Aluminum storage case provides organized protection and easy

👤 Electricians, HVAC technicians, and DIYers working frequently with sheet metal, plastic, or thin wood.

$23.00

Price updated 10 Oct 2026

🚚 Shipping to Israel: Free · 8–20 days (live from AliExpress)

This versatile 5-piece HSS Cobalt step drill bit set offers fifty sizes for all your projects. Perfect for DIYers and professionals, it comes in a durable aluminum case to ensure you always have the right tool for precise drilling.

🛒 Buy now on AliExpress →

📋 Full specs, sizes, materials & detailed description - on the AliExpress product page →

🌍 Ships worldwide via AliExpress with a tracking number. Any local import taxes (if any) are set by your country's customs, not by InstaShop.

📈 Price historyTracked daily since 28 Sept · 15 days

28 Sept12 Oct

Lowest

$22.52

Highest

$23.10

$23.00

➖ A typical price for this item

Over 15 days of daily tracking (since 28 Sept) the price ranged from $22.52 to $23.10. Today: $23.00.

Based on InstaShop's daily price tracking of AliExpress. The final price is set by AliExpress.

💡 Why buy · InstaShop analysis

⚠️ Design is limited to thin sheet materials rather than thick, solid sto
⚠️ Individual steps are difficult to sharpen effectively once they become

👤 Best for: Electricians, HVAC technicians, and DIYers working frequently with sheet metal, plastic, or thin wood.

🚫 Less suitable for: Heavy-duty industrial applications involving thick structural steel or high-precision machining.

🔎 Check before buying: Always use cutting oil and maintain low speeds to prevent overheating and extend the life of the cutting edges.

💰 Is the price good? Around the usual market price - compare with the similar items below.

🚚 Worldwide shipping - usually 2–4 weeks with a tracking number. Some sellers offer faster paid shipping.

⭐ Quality & trust: this product does not have enough AliExpress buyer reviews yet. Check the reviews with photos on the product page before buying.

🔒 Secure checkout - payment and purchase happen on AliExpress with Buyer Protection and a refund if the item never arrives / isn't as described.

💡 Before buying - on the product page check reviews with real photos, shipping time to your country, and sizes/specs if relevant.

What AliExpress buyers say

There are not enough AliExpress ratings for this product yet. Check the reviews with photos on the product page before buying.

See reviews on AliExpress →

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🔍 In-depth analysis

This analysis is written with an AI model from the product data (name, category, price, rating and orders), not from a hands-on test. How we choose and score

This five-piece step drill bit set is marketed as being constructed from HSS Cobalt, a material choice typically reserved for drilling through tougher metals where standard high-speed steel might fail due to heat buildup. Step bits are incredibly versatile tools, allowing you to drill multiple hole diameters using a single bit, which is ideal for working with thin materials like sheet metal, plastic, or wood. The inclusion of an aluminum carrying case suggests a focus on organization and protecting the cutting edges from damage during transport or storage in a crowded toolbox.

However, a critical look at the data shows that this specific listing has a very low sales volume, with only a handful of orders recorded so far. While the buyer rating is positive, the small sample size means you are essentially an early adopter. At this price point, you are paying a premium for the cobalt designation and the presentation case. Since the technical specifications like specific size increments and shank types aren't listed in the title, thorough verification is necessary before committing to the purchase.

✅ Pros

HSS Cobalt construction generally offers superior heat resistance compared to standard HSS bits.
The 5-piece configuration covers a wide range of potential hole sizes without requiring bit changes.
The aluminum case provides better protection and professional organization than a plastic pouch.

Cons and cautions

Very low number of orders means there is limited community feedback on long-term durability.
The current pricing is relatively high for an unbranded set with no specified size increments.
The modest rating suggests that at least one buyer found the product did not perfectly meet their expectations.

From our data

Delivery to Israel can take up to 20 days
Only 80% positive AliExpress buyer feedback, below 90%
Few written reviews (1), so the rating rests on a small sample

Who it's for: This set is best suited for DIY enthusiasts or maintenance workers who frequently work with sheet metal and need a variety of hole sizes in one compact kit. It is for those who value the heat resistance of cobalt over standard steel bits.

Who should skip it: High-volume industrial users may want more established brands with proven track records. It is also not for those looking for the lowest possible price, as the 'Cobalt' labeling and aluminum case drive up the cost.

🔎 Check before you buy

Confirm the exact diameter range for each of the five bits (start and end sizes).
Ask the seller if the shanks are round, three-sided, or hex to ensure they fit your specific drill chuck.
Verify the specific grade of cobalt used (e.g., M35 or M42) to ensure it meets your hardness requirements.
Clarify if the bits are suitable for stainless steel or only softer metals and plastics.

💰 Value verdict: Given the current price and the very low number of orders, the value is difficult to fully confirm. If the bits are indeed high-grade Cobalt, the price is fair, but without more buyer history or detailed specs, it represents a calculated risk. The current discount is negligible, so don't feel rushed.

💡 Tips

Always use cutting oil or lubricant when drilling through metal to extend the life of these bits.
Operate your drill at lower speeds for larger hole diameters to prevent overheating, regardless of the cobalt content.
Check the bits upon arrival for any chips or dullness in the cutting flutes before your first use.

Questions about this product

Can these bits drill through stainless steel?

While HSS Cobalt is often used for stainless steel, you must verify the specific cobalt percentage and thickness limits with the seller before attempting it.

What sizes are included in the 5-piece set?

The specific step increments are not listed in the product title; please contact the seller for a size chart to ensure they meet your needs.

Will these bits fit a standard 1/4-inch impact driver?

This depends on the shank type. You should ask the seller if they have a hex shank for impact drivers or a round/tri-flat shank for traditional drill chucks.

❓ Questions & Answers

Does it ship to my country?

Yes. The item ships worldwide via AliExpress, usually within 2–4 weeks, with a tracking number.

Are there customs or taxes?

Import duty/VAT depends on your country's rules and the order value. Any local charges are set by your customs authority, not by InstaShop.

How do I return an item if something is wrong?

Purchases are made on AliExpress with Buyer Protection - you can open a dispute and get a refund if the item never arrives or is not as described, typically within 15 days of delivery.

Is the price final?

The price shown is the product price on AliExpress. Shipping and any local import taxes (if applicable in your country) are separate.