The percentage shows how many AliExpress buyers rated this product positively. InstaShop does not edit or filter the rating.
✓ Selected for InstaShop by high positive feedback (88%+) and proven sales
✅ Versatile sizing allows for drilling multiple hole diameters
✅ Triangular shank design prevents the bit from slipping or sp
✅ Set includes milling bits for side-cutting, enlarging, and s
👤 DIY hobbyists and home installers working with thin sheet metal, PVC, or wood panels.
Price updated
Price range by option: $12.13 – $16.71
Choose an option (2)
Options (2):
ℹ️ Final price per option is set on AliExpress.
86/100⭐ RecommendedInstaShop Score
Rating
Sales volume
Discount
Computed by InstaShop from the product's real rating, sales volume and discount - an independent editorial signal, not a guarantee. How it is calculated
Upgrade your workshop with this versatile drill bit set designed for precision and efficiency. It is the perfect choice for DIY enthusiasts looking to create various hole sizes in different materials with ease. These durable tools ensure professional results for any project.
InstaShop is a catalog that links to AliExpress. Purchase, shipping and warranty are provided solely by the AliExpress seller; some links are affiliate links (the price to you doesn't change). Terms of Use
📈 Price history: is the discount real?
Typical price
Based on InstaShop's daily price tracking on AliExpress since 28.9.2026 · 32 measurements
Today's price
$11.98
checked 29.10
Lowest
$11.35
6.10
Average · 32 measurements
$11.83
28.9–29.10
We have tracked this product's price for 32 days, since 28.9.2026. The lowest was $11.35 (on 6.10.2026), the average $11.83 and the highest $12.11. Today's price, $11.98, is slightly above the average.
$11.98 · About usual (within 2% of the $11.83 average)
Last 30 days
low $11.35 · average $11.83
Tracked since
28.9.2026 · 32 daily checks
Lowest price
$11.35 (6.10.2026)
Price drops
3 times
At the current price
2 days ($11.98)
Listed discount
64% - not real: the "original" price was never charged while we tracked it
Real data only: one price check per day on AliExpress, international listing, in US$.
🔍 In-depth analysis
This step drill bit set is designed for versatility, featuring three distinct bits that cover a wide range of hole diameters from 4mm up to 32mm. The set includes sizes 4-12mm, 4-20mm, and 4-32mm, making it a comprehensive solution for enlarging holes in various materials without the need to swap between multiple individual drill bits. The most prominent feature is the triangular handle design, which is specifically engineered to sit securely in a standard drill chuck. This geometry helps prevent the bit from spinning or slipping under high torque, which is a common frustration with round-shank bits during heavy-duty tasks.
With a high volume of orders exceeding three thousand units and a very respectable buyer rating, this product has clearly established itself as a popular choice in the tool category. The straight flute design is a classic approach for step bits, providing clear increments for precise drilling. While the specific metal composition and heat treatment are not detailed in the product name, the sheer number of successful deliveries and positive feedback suggests a level of performance that satisfies the vast majority of users at the current discount level.
✅ Pros
Broad range of sizes (4mm to 32mm) provides great utility for different project requirements.
Triangular shank geometry offers a more secure grip in the chuck compared to round shanks.
High order volume and positive rating indicate consistent quality control and user satisfaction.
Straight flute design allows for easy monitoring of hole size progress during the drilling process.
Cons and cautions
Unspecified material grade makes it difficult to gauge longevity on harder metals.
Straight flutes may require more manual pressure compared to premium spiral-fluted bits.
The lack of specific certification details means users should test on scrap material first.
From our data
2 variants on one listing: price and spec change with the option you pick
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
Who it's for: This set is perfect for DIY enthusiasts, home mechanics, and hobbyists who work frequently with sheet metal, PVC, or thin timber. It is an ideal addition for anyone looking to simplify their toolbox with multi-sized bits.
Who should skip it: These bits are likely not suited for industrial-grade applications involving thick, hardened steel or continuous professional fabrication where specialized cobalt or carbide-tipped bits are typically required for heat dissipation.
🔎 Check before you buy
Confirm the specific material (e.g., HSS 4241 or 6542) with the seller to determine its hardness.
Ask if the bits have any specific coating, such as titanium, to improve heat resistance.
Verify the maximum recommended material thickness for the 32mm bit.
Check if a storage case or pouch is included with the set.
💰 Value verdict: Given the current discount and the high rating from thousands of buyers, this set offers excellent value. It provides a significant range of drilling options for a very modest investment. While it lacks premium technical specifications, its proven track record among thousands of users makes it a very safe and fair purchase.
💡 Tips
Always use a drop of cutting oil when drilling into metal to prevent overheating and maintain the sharpness of the steps.
Use a slower drill speed (RPM) as you move to the larger diameter steps to ensure a cleaner cut and protect the motor.
Clear away metal shavings frequently to prevent them from clogging the flutes and causing friction heat.
Questions about this product
What materials can these bits safely drill through?
Based on the category, they are likely intended for soft metals, plastics, and wood. You should ask the seller specifically if they can handle stainless steel.
Will the largest bit fit in a standard 10mm or 13mm drill chuck?
The bits feature triangular handles designed for standard chucks, but you should confirm the exact diameter of the 4-32mm bit's shank with the seller to be sure.
Are the sizes marked on the bits in metric or imperial?
The product name specifies diameters in millimeters (4-12/4-20/4-32), indicating these are metric-sized bits.
❓ Questions & Answers
What does it cost in US dollars?
$11.98 - AliExpress's international price at our latest check (29.10.2026). The exact amount in your currency, with shipping, is shown at AliExpress checkout.
Shipping and import taxes to my country?
Delivery to your address, its cost and time depend on the seller and your country; import duty/VAT depends on your country's rules (in the EU, the UK and Australia VAT/GST is usually collected at AliExpress checkout). All of it is shown before you pay.
Is this price tracked?
Yes. We have checked this listing's price 32 times since 28.9.2026 - see the price history and the tracking facts on this page.
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