Best Bosch Mechanics Length Drill Bits in 2026

Cobalt M42 drill bit – provides upgraded M42 Cobalt jobber-length bits designed for durability, high heat resistance and Hardened surface for stainless steel, cast iron, titanium, light-gauge metal and aluminum

Enhanced M42 alloy material – contains 8% Cobalt alloy that delivers 10x life vs. Standard bits

High-heat resistant bits – withstand high-temperature applications for extended periods of time

115 PIECES INCLUDED: 29pcs Fractional Size:1/16” to 1/2” in 1/64th increments; 26pcs Letter Size: A To Z; 60pcs Numbered Size: #1 To #60.

HSS WITH 5% COBALT: Durable, Higher Heat & Abrasion Resistance.

PRECISE 135° SPLIT POINT & TWIST DESIGN: Prevent walking, clear chips and particles faster.

Withstands high-temperature applications for extended periods of time (up to 1,100 degreeF)

Rigid, thick web design adds stability to bit in tough applications

Surface hardened to penetrate tough abrasive materials

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

Drill 3x Longer (than competitors drills), Drill 2x Faster (than cobalt), Drill Accurate (135 deg split point, tapered web geometry)

Better than cobalt-XL28 is able to flex when cobalt drills chip or snap.

Reduced overall length provides added strength and rigidity. Flatted shanks for fast chucking in keyless power tools.

HIGH QUALITY MATERIAL: 5% Cobalt High Speed Steel M35 provide extended tool life compared to ordinary drill bits.Durable, Higher Heat & Abrasion Resistance.

PRECISE 135°SPLIT POINT & TWIST DESIGN: Prevent walking, clear chips and particles faster.

PROFESSIONAL & WIDELY USE: M35 Cobalt HSS is more suitable for hardened material. Particularly successful in cutting through hard metals such as stainless steel, cast iron, high temperature alloy, titanium alloy, hard plastics and woods, and also can be used for softer materials.

★【Premium Bright Finish 2/Pack】 multi-purpose solid carbide drill bits provide better rigidity than high speed steel bits. It is extremely heat resistant and used for high speed applications. Our tungsten carbide (WC) bits has the advantage of cutting metal either "wet" or "dry" and they provide solutions for many businesses such as aerospace drilling jobs for aircraft mechanics, precision machining, hobby supply, etc.

★【Recommended For Use On】 aircraft metals chrome titanium inconel stainless steel Alloys Steel Low-Medium-High Carbon Steel Aluminum Copper Glass Plastics Composite Materials Cast Iron -- Our Carbide drills stay sharp many times longer than traditional steel bits making them ideal for the toughest of applications!

★【Optimal Design for Metal Work】 118° four facet point angle minimizes drill wander and assures accurately sized holes. Our jobber length, precision ground carbide drills are designed for high feed rates with good chip disposal. smooth finish on the bits increases chip flow. Spiral flutes are constructed with a higher flute angle to remove chips more easily.

★【Pack of 2 / Premium Bright Finish】 Multi-purpose solid carbide drill bits provide better rigidity than high speed steel bits. It is extremely heat resistant and used for high speed applications. Our tungsten carbide (WC) bits has the advantage of cutting metal either "wet" or "dry" and they provide solutions for many businesses such as aerospace drilling jobs for aircraft mechanics, precision machining, hobby supply, etc.

★【Recommended For Use On】 aircraft metals chrome titanium inconel stainless steel Alloys Steel Low-Medium-High Carbon Steel Aluminum Copper Glass Plastics Composite Materials Cast Iron -- Our Carbide drills stay sharp many times longer than traditional steel bits making them ideal for the toughest of applications!

★【Optimal Design for Metal Work】 118° four facet point angle minimizes drill wander and assures accurately sized holes. Our jobber length, precision ground carbide drills are designed for high feed rates with good chip disposal. smooth finish on the bits increases chip flow. Spiral flutes are constructed with a higher flute angle to remove chips more easily.

13 PACK OF 3/32" COBALT DRILL BITS - 3/32" Diameter with a Flute Length of 1-1/4" and Total length of 2-1/4"

M35, FULLY GROUND, 135° SPLIT POINT - Our Drill Bits Contain 5% Cobalt, Are Fully Grounded for a Precision Drilling Diameter. 135° Split Point Design Makes it Easier to Drill Repeated Holes in Harder Materials.

PLASTIC STORAGE CASE INCLUDED - Incredibly Tough and Durable Plastic Case. Perfect for Keeping Your Cobalt Drill Bits Neatly Organized and Safe.

Packaging: 10 pcs Cobalt Drill Bit Set , Diameter 3/16"(Dia 4.76mm) , Flute Length 2-5/16"（58.74mm） , in a sturdy plastic case for easy storage and carrying.

3/16" M35 Material Cobalt drill bits: 3/16" drill bits for metal is made of Industry grade M35 High Speed Steel, containing 5% cobalt, which increases drill bit wear-resistance, durability and heat resistance.

135 Degree Tip Twist Design: precise positioning, lower pressure, fast penetration. Equipped with a straight shank to prevent walking, making drilling more precise and fast,clears particles quickly, decreases friction and heat.

Made from premium quality high speed steel, good strength and durability.

Titanium coating prevents rusting and increases wear resistance, providing continuous sharping for the drill bits.

Fully Grinding Processing makes the surface of drill bit smoother, the friction can be reduced and the cutting speed is faster.

Precision ground, self centering 135 Deg. Split Point

HSS, point geometry and Nomo treatment

Able to flex when cobalt drills chip or snap

Short flute and overall length increase rigidity, resulting in better hole accuracy and extended tool life

Premium cobalt high speed steel for incredible heat resistance and longer tool life.

Accurate drilling due to 135 Degree Split Point

TITANIUM | HIGH-SPEED STEEL: Twist Drill Bits, Jobber Length,Classic HSS Construction With Titanium Coating For Proven Capability And Durability.

STRENGTH & DURABILITY: Made With HSS 4341, Rockwell Hardness Level HRC 60-62.

20PCS:Diameter 3/16 inch, Total Length 3-1/2 inch, Working Length 2-5/16 inch.

Made In USA

No Center Punch or Pilot Hole required

3-Flats on Shank (sizes 3/16" and above)

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

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

Titanium nitride (TiN) coating offers increased wear resistance, extended tool life, and higher hardness on ferrous and nonmetallic materials

Made In USA

No Center Punch or Pilot Hole required

3-Flats on Shank (sizes 3/16" and above)

May eliminate the need for a screw extractor

135° Split Point Starts On Contact & Will Not Walk

Drills Stainless Steel and Titanium Alloy