goldstarkitchen 
Best results for extra long cobalt drill bits
Drill America 5/32" x 6" Cobalt Aircraft Extension Drill Bit, GLBCO Series
$5.66
$8.26
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium
- 135° split point tip prevents drill from walking
- Round shanks allow use with a wide variety of tool holding systems
- Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools
- performance is similar to uncoated tools
- 6" overall length for drilling where extra length for reach is required
Drill America 7/64" x 6" Cobalt Aircraft Extension Drill Bit, GLBCO Series
$5.07
$6.74
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium
- 135° split point tip prevents drill from walking
- Round shanks allow use with a wide variety of tool holding systems
- Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools
- performance is similar to uncoated tools
- 6" overall length for drilling where extra length for reach is required
Hymnorq 1/8 Inch Fractional Jobber Twist Drill Bit Set of 10pcs, Heat Resistant M35 Cobalt Steel, Fully Ground and Straight Shank, Suitable for Repeated Drilling in Iron and Stainless Steel
$11.99
$15.35
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- HSS-CO MATERIAL - Manufactured from M35 grade cobalt steel, 5% cobalt added to creates a hardened alloy, for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit.
- 135° SPLIT POINT - the 135° quick-cut split point are self-centering and able to penetrate metals quickly with less pressure, prevent bits from "walking and wanding". Easy cutting without need of center punch.
Drill America 5/32" x 12" High Speed Steel Aircraft Extension Drill Bit, DWDA/C Series
$8.22
$11.18
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
- Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge
- Round shanks allow use with a wide variety of tool holding systems
- When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
Migiwata Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bits with Straight Shank Set of 13pcs to Cut Through Hard Metals Such as Stainless Steel and Cast Iron
$14.89
$20.40
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- COBALT STEEL - Manufactured from M35 cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, extremely heat resistant
- for much faster cutting and extra longer life span, with up to twelve times when compared with an average HSS drill bit.
- NO CENTER PUNCH NEEDED - The 135° Quick-Cut points are self-centering and penetrate quickly with less pressure. Will not "walk" or "wander". Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks. Must be used and operated at proper RPMs for maximum efficiency
Vermont American 12674 Cobalt Drill Bit, 3/8-Inch by 5-Inch
$7.49
$9.44
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- Superior durability and speed for most general purpose drilling applications in wood, metal and plastic
- Triple tempered black oxide coating provides very high lubricity to reduce heat buildup and prolong the life of the bit
- Features a 135-degree split point for fast starts and minimal walking or skating
Drill America 1/2" x 12" Cobalt Aircraft Extension Drill Bit, GLBCO Series
$28.99
$34.79
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- Effective in drilling tough, high tensile strength materials like stainless steel, inconel and titanium
- 135° split point tip prevents drill from walking
- Round shanks allow use with a wide variety of tool holding systems
- Gold oxide is a thinner oxide surface treatment than black oxide typically used to identify cobalt steel tools
- performance is similar to uncoated tools
- 12" overall length for drilling where extra length for reach is required
Best Choice 8-Piece 1/2” Shank Silver and Deming Drill Bit Set in Aluminum Carry Case, High Speed Steel (HSS) | SAE Size 9/16” – 1” by 1/16th Increment
$27.99
$33.31
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- Premium cobalt high speed steel construction for proven capability and durability to drill holes in wood, plastic, aluminum, copper, stainless, sheet metals and many other types of materials
- Superior gold titanium and black nitride dual coating finish holds up lubricant better for smoother drilling, and is 80% more durable and corrosion resistant than regular black enamel finish
- 135° Split point design at tip increases cutting speed with self-centering feature and prevents drill walking or wobbling
POWERTEC QDB2013 Cobalt Drill Bit 1/16-Inch | 135 Degree Drill Bit Set – 12 Pack
$9.99
$11.89
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- INCLUDES: 1/16-Inch Cobalt Jobber Drill Bit Set (12 piece)
- APPLICATION(S): Cobalt drill bit for metal, stainless steel, nickel alloy, cast iron, titanium and softer material
- PREMIUM QUALITY: These M35 cobalt drill bits are made with the finest high speed steel ideal for high abrasive, optimal heat treatment, and wear resistance for long-term durability
- SELF CENTERING: 135 degree split point drill bits penetrate quicker with less pressure needed – minimizing bit walking (wandering) while ensuring a crisp, centered drill hole that doesn’t require a center punch
MaxTool 29 Piece Twist Jobber Length Drill Bit Set; 8% Cobalt High Speed Steel HSS M42; 135° Split Point; Fully-Ground; JBS42G10R029P
$99.99
$128.99
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- 29pcs jobber length drill bits includes inch sizes 1/16" to 1/2" in 1/64" increments
- Premium Quality 8% Cobalt High Speed Steel M42 (Hardness up to HRC68) provides all drills long tool life
- Precision fully ground ensures chips moving smoothly, ultimate accuracy and performace
- Golden surface finish resists corrosion and increases the hardness of the drill bits
- 135-degree split point prevents "Walking", reduce logging, and penetrates hard material without a pilot hole
Bosch BL2637 5/32 In. x 6 In. Extra Length Aircraft Black Oxide Drill Bit
$2.37
$3.10
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- Speed helix design for three times faster drilling than standard bits
- Last 50 percent longer than high-speed steel
- Easier drilling, reduced heat and extended drill bit life
- Available in jobber length, stubby length, extended length (aircraft), 1/2 In. reduced shank (Silver and Deming)
- For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials
DEWALT DW1614 1/2" x 12" Black Oxide Drill Bit
Cobalt M35 Imperial drill kit by TTP HARD drills | 29 piece drill bit set 1/16” – 1/2” x 1/64” | added cobalt for drilling harder metals |Easy to use & long life | Easily drill chrome, stainless stee
Vermont American 10488 1/2-Inch – 3/8-Inch Shank HSS Drill Bit
$6.67
$8.87
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- For drilling in wood, metal and plastic. Each high speed steel bit is hardened and tempered for long life and high performance in tough applications
- 118 Degree point configuration is ideal for general purpose drilling applications
- 3/8-Inch reduced shank allows for drilling larger holes with 3/8-Inch drills
5 Pcs Pack 3/8" Inch M35 HSS Cobalt Drill Bit Jobber Length Drill Bits Twist Drill Bits 135 Deg. Split Point Drilling Steel, Meteal, Iron.
$21.99
$26.17
Amazon.com
Last update was on: April 30, 2024 6:33 pm
- ● Diameter: 3/8"
- Flute Length: 3-5/8"
- Overall Length: 5".
- ● HSS Cobalt High Speed Steel, best Material for improving performance and drilling life when cutting and drilling harder metals, such as Stainless steel, or other hard steel
- ● The Gold Oxide strongthen the surface by Oxiding treatment on the Cobalt Steel, to ensure the long drilling life and better drilling performance
- ● The 135 Deg. Split Point to ensure the best positioning and better drilling performance
