The Best High-speed-steel Jobber Drill Bits of 2023

Set of 13 jobber length drill bits includes inch sizes 1/16" through 1/4" in 1/64" increments

High-speed steel (HSS) provides hardness for wear resistance

Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material

118-degree conventional point for a range of drilling applications

Jobber length drill bit has a midrange drilling depth suitable for general-purpose drilling applications

Made in the USA

Set of 29 jobber length drill bits includes inch sizes 1/16" through 1/2" in 1/64" increments

High-speed steel (HSS) provides hardness for wear resistance

Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material

118-degree conventional point for a range of drilling applications

Jobber length drill bit has a midrange drilling depth suitable for general-purpose drilling applications

Set of 60 jobber length drill bits includes one each of wire gauge sizes #60 through #1

High-speed steel (HSS) provides hardness for wear resistance

Black oxide finish reduces bit wear while promoting chip and coolant flow on ferrous material

118-degree conventional point for a range of drilling applications

Jobber length drill bit has a midrange drilling depth suitable for general-purpose drilling applications

Made in the USA

✔️ COBALT DRILL BIT DIMENSION:3/8"(Diameter) x 3-5/8"( Flute Length) x 5"(Overall Length)

✔️ COBALT MATERIAL: HSS(M35) Cobalt Steel is the premium material with high hardness and red hardness to enable long drilling life and fast drilling performance.

✔️ SURFACE TREATMENT: The Gold Oxide Ember finished surface treatment strongthen the hardness of drill bit body  to ensure the long drilling life and better drilling performance.

✔️ SPLIT POINT ANGLE 135 DEG.: No center punch is needed- the aggrevsive 135 deg. Split Point quick-cutting points are self- centering and penetrate quickly with less pressure. will not "walk" or"wander".

✔️ APPLICATION: Best used for drilling into light-gauge metal, high-carbon steel, aluminum and alloy steel, cast iron, stainless steel and titanium

COBALT STEEL - Manufactured from M35 grade cobalt steel, with molybdenum and cobalt added to creates a hardened alloy, measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, ideal for repeated drilling in metalworking.

FOR METALWORKING - Particularly successful in cutting through hard metals(hardness less than HRC38°) such as stainless steel and cast iron, although they can be used for softer materials like copper and aluminium, too. Not for hardened steel / high carbon steel. Try to adjust the RPM when it fails to penetrate.

SELF CENTERING - The 135°quick-cut pilot split points are self-centering and can penetrate quickly with less pressure. The bits will not "walk" or "wander". Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks.

10PC SET - The set includes 10pcs of 7/32” diameter M35 grade cobalt steel twist drill bits, packed in a plastic case for easy storage and carrying. Manufactured to German DIN338 standard.

DOWNLOADABLE USER GUIDE - We've summed up some tips of drilling metals, including a RPM chart for several common metals, based on our reviews and some articles on the internet. In most cases, our customers would get a much better result with these tips. Welcome to download.

High Quality Material - Versatile general-purpose drill bit set, High Speed Steel, black and gold finish resists corrosion and increases the hardness of the drill bit.

135-degree Point Tip & Twist Design - Increases cutting speed with self-centering and prevents walking, clears chips and particles faster. Produced by precision fully ground which ensures chips move smoothly.

Professional and Widely Use - Great drill bits set for metal/ wood/ plastic. Suitable for Home DIY, and General Building/ Engineering/ Woodworking Use.

Set Including - The set includes wire gage size #1 to #60, can meet your different demands perfectly.

Organized Holder - Set includes the drill bit holder with size index for easy storage and organizing.

10 pcs 3.2 mm (1/8") cobalt drill bit set for precise hole drilling into various material. Total 65 mm long with 35 mm working length

Very tough drill bit for heavy duty work drilling into stainless steel, light-gauge metal, high-carbon steel, aluminum and alloy steel, cast iron, abrasive alloy metal, other hard metal and hardened steel. 4 times life time than normal metal drill bit when drilling into PCB board, plastic, wood, jewelry, sheet metal and normal steel

M35 Cobalt drill bits are made from industrial grade High Speed Steel with 5% cobalt alloy that is heat and abrasion-resistant

135-degree split-point tip starts drilling immediately with less force and eliminates walking or skating across the work surface

Straight shank fits with electric and cordless power drill and rotary drill. Drill bits are packed in a plastic Box that is convenient to carry and store

Cobalt drill bits: Classic M2 High Speed Steel construction with Black and Gold finish for proven capability and durability.

Hardness: M2 Twist drill bits’ Rock wall Hardness Level HRC 62-63.

Package & Size: 6 Pieces drill bits in a plastic bag, Diameter 3/8 inch, Total length 5 inch, Working length 3-5/8 inch.

Professional & DIY Use: For use on metal, wood & plastics. Not For Use On Concrete / Masonry. Perfect match for workshop or service vehicles.

135 Tip & Twist Design: Increases cutting speed with self-centering and prevents walking, clears chips and particles faster.

JOBBER LENGTH: 3/16-inch cutting diameter, 2-5/16-inch flute length, 3-1/2-inch overall length, 135 degree split point, 3-flat shank

MADE FROM PREMIUM M2 HIGH-SPEED STEEL: perform better because of its well-balanced toughness

TITANIUM NITRIDE COATING: add lubricity and hardness, enhancing chip flow, finish hole quality and drill life

APPLICATION: offer best durability and speed for repetitive drilling in medium and softer materials, soft metal, PVC and wood

INCLUDE: 12 pieces of 3/16-inch titanium coated drill bits with case

JOBBER LENGTH: 3/16-inch cutting diameter, 2-5/16-inch flute length, 3-1/2-inch overall length, 135 degree split point, 3-flat shank

MADE FROM HIGH-SPEED STEEL AND 5% COBALT: improve much higher heat resistance because of cobalt steel's high red hardness, provide strong durable performance compared to typical hss drill bits

CAN BE REPEATEDLY SHARPENED AS NEEDED: cobalt drill bit's hardness is uniform throughout the entire material, so that can be repeatedly sharpened without damaging the cutting edge allowing it to drill more than hss drill bits

APPLICATION: best used for drilling in hard metal, including stainless steel

INCLUDE: 12 pieces of 3/16-inch cobalt drill bits with case