Gather ’round, folks! We’re diving into Price or quality? cobalt vs titanium vs black oxide drill bits
The best cobalt vs titanium vs black oxide drill bits
6 Pcs, #21 Cobalt Black Oxide Long Threaded Shank Drill Bit, Tsd21L, Number Of Flutes: 2; Cutting Direction: Right Hand, Overall Length: 2-1/8" Shank Size: 1/4"-28
out of stock
Amazon.com
as of March 11, 2026 10:05 am
Features
- Size: #21; Material: Cobalt; Finish: Black Oxide;
- Overall Length: 2-1/8"; Shank Size: 1/4"-28;
- Shank Type: Threaded; Style: Threaded Shank;
- Cutting Angle: 135; Point Type: Split Point;
- Number of Flutes: 2; Cutting Direction: Right Hand
Hymnorq Cobalt Steel Twist Drill Brill Bits 74pc Set, M35 Grade HSS Co, Metric Size 1mm - 8mm, 135 Degree Self-Centering Split Point, for Drilling Metals Aluminum Copper Cast Iron Stainless Steel
out of stock
Amazon.com
as of March 11, 2026 10:05 am
Features
- Industrial-Grade M35 Cobalt Steel: Engineered with high-speed steel containing 5% cobalt (HSS-CO), these bits offer superior heat and abrasion resistance. Specifically designed to cut through tough, high-tensile materials like stainless steel, cast iron, and titanium alloy with ease.
- Precision 135° Split Point: The fully ground 135-degree split point tip centers immediately upon contact, preventing "walking" or skating across the work surface. This design requires less pressure to penetrate and ensures clean, accurate holes every time.
- 74-Piece Metric Workshop Stock: A comprehensive assortment ranging from 1mm to 8mm, providing an abundant supply of the most commonly used sizes. Perfect for professional workshops, machinists, and contractors who need reliable replacements on hand for continuous drilling tasks.
- Fully Ground for Efficiency: Manufactured to strict DIN338 standards with a fully ground body and dual twist flutes. This geometry maximizes chip removal and coolant flow, reducing heat buildup and extending the lifespan of the bit during heavy-duty use.
- High-Value Bulk Packaging: Note: These bits are packed in a sealed plastic bag (no index case included). This bulk packaging offers maximum value, allowing you to pay for premium tool quality rather than expensive storage, ideal for replenishing your tool chest or inventory.
HIDOTOL 13 PCS Cobalt Drill Bit Set M35 HSS Twist Drill Bits 1/16"-1/4" for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic with Indexed Rose Case
out of stock
Amazon.com
as of March 11, 2026 10:05 am
Features
- High Quality Material - Premium High Speed Steel M35 (Cobalt 5%) provide extended tool life compared to ordinary drill bits when drilling hard materials.
- Characteristics - 135° split point with round straight shank, self-centering prevent walking, make drilling precise and faster. Fully Ground twist design helps clear particles faster, decreases friction and heat for a cooler drilling performance.
- Widely Used - M35 Cobalt High Speed Steel is more suitable for tough, high tensile strength material. Particularly successful in cutting harden metals such as stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics and woods.
- Specifications - Set of 13pcs jobber length drill bits includes: 1/16, 5/64, 3/32, 7/64, 1/8, 9/64, 5/32, 11/64, 3/16, 13/64, 7/32, 15/64, 1/4.
- Organized Holder - The whole drill bit set are kept in Rose plastic case with size index holder for easy storage and organizing.
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Price Drops Alerts
6 Pcs, #21 Cobalt Black Oxide Long Threaded Shank Drill Bit, Tsd21L, Number Of Flutes: 2; Cutting Direction: Right Hand, Overall Length: 2-1/8" Shank Size: 1/4"-28, Drill America
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Price History
Statistics
| Current Price | - | March 11, 2026 |
| Highest Price | 19.10 | December 1, 2025 |
| Lowest Price | 19.10 | December 1, 2025 |
Since December 1, 2025
Last price changes
| 19.10 | December 1, 2025 |
Hymnorq Cobalt Steel Twist Drill Brill Bits 74pc Set, M35 Grade HSS Co, Metric Size 1mm - 8mm, 135 Degree Self-Centering Split Point, for Drilling Metals Aluminum Copper Cast Iron Stainless Steel, Hymnorq
out of stock
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Amazon.com
Wait For A Price Drop
Price History
Statistics
| Current Price | - | March 11, 2026 |
| Highest Price | 22.99 | December 1, 2025 |
| Lowest Price | 22.99 | December 1, 2025 |
Since December 1, 2025
Last price changes
| 22.99 | December 1, 2025 |
HIDOTOL 13 PCS Cobalt Drill Bit Set M35 HSS Twist Drill Bits 1/16"-1/4" for Hardened Metal, Stainless Steel, Cast Iron, Wood and Plastic with Indexed Rose Case, HIDOTOL
out of stock
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Amazon.com
Wait For A Price Drop
Price History
Statistics
| Current Price | - | March 11, 2026 |
| Highest Price | 8.89 | January 6, 2026 |
| Lowest Price | 8.89 | January 6, 2026 |
Since January 6, 2026
Last price changes
| 8.89 | January 6, 2026 |