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Item #:
119946612
12 inch HSS M35 Cobalt Twist Drill Bits,High Speed Steel,Pack of 5,Suitable for Steels,Cast Iron,Stainless Steels and Other hardMetals12inch
Item #:
119946612
USD 51
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These are so good to save times. Works great and good price, Will be a good assistant in your work.
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What Stands Out
Cobalt Composition
Crafted from M35 cobalt steel, these drill bits offer superior durability and heat resistance, making them ideal for cutting through tough materials like stainless steel and cast iron with ease.
Versatile Sizes
This pack of five 1/2'' twist drill bits provides a versatile solution for various drilling tasks, ensuring users have the right tool for both professional and DIY projects across multiple hard materials.
High-Speed Performance
Designed for high-speed drilling, these bits maintain sharpness and precision under demanding conditions, enhancing efficiency and results, which sets them apart from standard drill bits.
Product Details
| Material | Cobalt Steel |
| Cutting Diameter | 0.5 Inches (1.3 cm) |
| Finish Type | Uncoated |
| Shank Type | Straight |
| Cutting Angle String | 135 Degrees |
Who Should Buy?
-
Metal Fabricators
Ideal for professionals working with steel, stainless, and cast iron needing precision and durability in drilling.
-
DIY Enthusiasts
Great for hobbyists who frequently work on metal projects and require reliable drill bits for tough materials.
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Construction Workers
Suitable for construction applications where high-performance drilling into hard metals is often required for structural work.
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Casual Users
Not ideal for users who rarely drill metal, as the performance may exceed their occasional needs and budget.
Product Description
12 inch HSS M35 Cobalt Twist Drill Bits,High Speed Steel,Pack of 5,Suitable for Steels,Cast Iron,Stainless Steels and Other hardMetals12inch
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Customer Questions & Answers
-
Question:
What materials can this drill bit be used on?
Answer: It can be used on metals such as steel, cast iron, copper, galvanized pipe, aluminum alloy, as well as wood and plastic. -
Question:
Is this drill bit suitable for both professionals and beginners?
Answer: Yes, it is designed for both professional use and DIY tasks. -
Question:
What is the size and length of the drill bit?
Answer: The drill bit is 1/2 inch in size with a total length of 150mm and a work length of 110mm.
DelitonGude Jobber Drill Bits Editorial Review
The 1/2" inch HSS M35 Cobalt Twist Drill Bits have garnered a mixed but generally favorable reception from customers. Many users have praised these bits for their efficiency and durability when working with various metals, showcasing their strong performance on tougher materials like stainless steel and bronze. A customer reported using a single bit to drill over 40 holes in older steel tubing, which speaks volumes about the longevity and effectiveness of these drills. However, there have been instances where some users found performance on particularly hard materials challenging. One reviewer noted that while drilling through T-posts, the bits struggled to maintain their cutting ability, leading to some frustration in their performance. This suggests that while these bits excel in many applications, they may fall short in extreme cases of hardness. The overall Consensus, though, leans towards satisfaction, with several customers impressed by the quality relative to the price. The customer service experience has also been highlighted positively, with quick responses to issues and refunds offered where necessary. The handy case that accompanies the bits is another appreciated feature. In summary, the M35 Cobalt Twist Drill Bits are suitable for a variety of drilling tasks, particularly in softer metals, making them a great value purchase for those looking to tackle a range of projects. **
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Pros
- Excellent performance on metal, including bronze and stainless steel.
- Durable bits, with reports of multiple uses from a single bit.
- Good value for money; users find them effective for their price.
- Comes with a convenient case for storage.
Cons
- Performance may struggle on extremely hard materials like T-posts.
Platform Trust & Buyer Confidence
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Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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Chitra
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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23-Jul-26 · via Trustpilot
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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SAO JOHN
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23 July 2026 · via Trustpilot
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USD 51
Order now and get it around Sunday, August 30
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
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Features & Benefits
- Constructed from durable M35 High-speed Steel with 5% Cobalt.
- Sharp blades that rapidly drill into various metals and materials.
- Suitable for both professional and DIY tasks.
- Features a 135 Tip & Twist Design for increased cutting speed.
- Excellent wear resistance and efficient chip removal with spiral groove design.
- Affordable pricing for high-quality performance.
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