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The best black oxide vs titanium vs cobalt 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
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as of April 2, 2026 6:29 pm
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
for Milwaukee Shockwave Impact Duty Red Helix 48-89-4631 Titanium Drill Bit Set 23Pc L 11 x W 9.4 x H 1.7 inches
$59.99
out of stock
Amazon.com
as of April 2, 2026 6:29 pm
Features
- Titanium Drill Bit Set is engineered for extreme durability and long life. The tip delivers a precision start and features four cutting edges to create smaller chips for faster material removal and less heat leading to improved performance.
- Designed with a VARIABLE HELIX flute that begins with an aggressive 35° helical angle and ends at 15° for rapid chip removal. The bits also feature an internal thicker tapered web that greatly increases strength, reducing premature breakage. Ideal for various applications including but not limited to wood, plastics, and metals.Titanium Coating for Up to 3X Life vs. Black Oxide
- Made of durable high quality materials. Compact and sturdy, built to last.
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 April 2, 2026 6:29 pm
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.
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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
out of stock
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Wait For A Price Drop
Price History
Statistics
| Current Price | - | April 2, 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 |
for Milwaukee Shockwave Impact Duty Red Helix 48-89-4631 Titanium Drill Bit Set 23Pc L 11 x W 9.4 x H 1.7 inches, yuqidian
Price: $59.99
out of stock
as of April 2, 2026 6:29 pm
as of April 2, 2026 6:29 pm
BUY NOW
Amazon.com
Price History
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
BUY NOW
Amazon.com
Wait For A Price Drop
Price History
Statistics
| Current Price | - | April 2, 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 |