DEDRA HSS + 5% Cobalt + TiN Metal Drill Bit, 12x151 mm, 135° – Professional cobalt drill bit for precision drilling

HSS+cobalt+TiN metal drill bit, 135°, 12x151 mm, 1 pc. It is a sturdy and reliable tool designed for drilling precise holes in metal during workshop, assembly, maintenance, and technical work..Made of high-speed steel (HSS) with 5% cobalt and coated with TiN, it ensures high durability, good heat resistance, and smooth operation during drilling.With a diameter of 12 mm, this drill bit is ideal for drilling larger structural, assembly, and process holes.

This is a practical choice for users who expect a metal drill bit to offer not only sharpness, but also stability, performance, and a long service life.The 135° point angle makes it easier to start drilling, improves tool guidance, and reduces the risk of the bit slipping on the surface of the workpiece.This makes the work more controlled, more precise, and more convenient.

The drill bit is coated with a layer of titanium nitride, which ensures a low coefficient of friction, reduces the risk of chips sticking to the drill bit, and increases drilling efficiency; it also reduces vibration and extends the drill bit's service life.

What is an HSS+cobalt+TiN 135° 12x151 mm metal drill bit??

HSS+Cobalt+TiN Metal Drill Bit is a specialized twist drill designed for metalworking.Its design was developed to ensure effective material removal, efficient chip evacuation, and stable operation even at larger drilling diameters.The drill bit has a diameter of 12 mm and a length of 151 mm, making it ideal for drilling larger-diameter holes in metal parts.

The product's most important advantage is the combination of three features: high-speed steel (HSS), a 5% cobalt additive, and a TiN coating.HSS steel provides hardness and cutting performance, cobalt enhances resistance to high temperatures and wear, and the titanium nitride coating reduces friction.In practice, this means more efficient drilling, less stress on the tool, and a longer service life during regular use.

A 135° point angle improves the centering of the drill bit on the workpiece surface.This is especially important when drilling into metal, where standard drill bits can easily “slip” on a smooth surface.Thanks to its sharp and stable tip, the user gains greater control over the start of the hole, which is important for both precision work and high-volume drilling.

DEDRA WIT12015 HSS Cobalt TiN Metal Drill Bit – Product Type, Brand, and Model for Demanding Applications

Model WIT12015 from the DEDRA is a TiN-coated cobalt metal drill bit designed for those who need durable tools for everyday use in a workshop, garage, manufacturing facility, or during assembly work.The product is sold individually, allowing you to add exactly the size you need to your tool set—in this case, the popular 12-mm diameter.

A drill bit is useful for assembling steel components, drilling holes for screws, preparing structural joints, reaming existing holes, and performing repair work.It can be used by DIY enthusiasts, mechanics, installers, locksmiths, maintenance workers, and users who expect greater durability than that offered by standard metal drill bits.

The three key benefits of this model are: greater wear resistance due to its cobalt content, lower friction thanks to the TiN coating, and precise guidance due to the 135° angle.This combination of features makes the drill bit well-suited for applications where hole accuracy, repeatability, and minimizing downtime caused by rapid loss of sharpness are critical.

Where is the 12 mm HSS+cobalt+TiN metal drill bit installed??

The drill bit is mounted in the drill chuck of a drilling tool, such as an electric drill, a drill/driver with sufficient power, a bench drill, or a pillar drill.The product features a cylindrical shank, so it should be mounted in a standard jaw chuck and tightened evenly to ensure stable guidance during operation.

Proper installation is crucial to the quality of the drilling.The drill bit should be inserted straight, without any tilt, and the chuck must be tightened securely.With a diameter of 12 mm, it is particularly important to select the appropriate rotational speed, securely clamp the workpiece, and apply the correct pressure.In workshop applications, it is a good idea to use a vise, clamps, or a workbench to improve safety and accuracy.

In everyday use, this drill bit is ideal for drilling holes in metal profiles, angle iron, flat bar, sheet metal, structural components, brackets, fasteners, and technical parts.It can be used wherever a 12-mm-diameter hole needs to be drilled with precision and repeatability.

Using a 12-mm metal drill bit – workshop, assembly, and technical work

This HSS metal drill bit with cobalt and a TiN coating is designed for drilling in metal parts.Their 12-mm diameter makes them particularly useful for holes for screws, anchors, rivets, pins, sleeves, and mounting hardware.This size is often used in metalworking, mechanical, plumbing, and construction work.

In practice, the product can be used when fabricating steel frames, repairing machinery, assembling workshop shelving, drilling holes in profiles, upgrading fences, working on metal structures, or fitting technical components.The drill bit is also suitable for garage projects, such as repairing handles, fasteners, brackets, mounting plates, and equipment components.

From the user's perspective, the three most important features are precision, durability, and smooth operation.Precision comes from the 135° angle, durability from the cobalt-alloyed HSS material, and smooth operation from the TiN coating, which helps reduce friction and chip adhesion.As a result, the drill bit ensures comfortable use even with frequent use.

TiN coating, 5% cobalt, and a 135° angle—longer life and more comfortable drilling

A TiN coating—that is, a layer of titanium nitride—plays an important role when drilling into metal.It reduces friction between the drill bit and the workpiece, which facilitates chip removal and reduces the risk of chips sticking to the work surface.Less friction also means smoother operation, less strain on the tool, and better control over the drilling process.

The addition of 5% cobalt increases the drill bit's resistance to the heat generated during cutting.This is important when drilling into metals, because high temperatures can cause standard drill bits to dull more quickly.A cobalt drill bit can withstand more intense use, making it a good choice for tasks that require greater durability and reliability.

The 135° point angle improves the initial drilling and helps keep the drill bit at the desired location.This is particularly useful on smooth metal surfaces, where a precise hole start is crucial.The user benefits from greater precision, less vibration, and a higher-quality hole.

Technical Specifications for the HSS+Cobalt+TiN Metal Drill Bit, 12x151 mm

Product name	HSS+cobalt+TiN metal drill bit, 135°, 12x151 mm, 1 pc.
EAN	5902628940261
External system code	WIT12015
Series / Brand	DEDRA
Type	TiN cobalt metal drill bit
Drill type	Metal drill
Material	High-speed steel (HSS), 5% cobalt + TiN
Coating	TiN – titanium nitride
Drill diameter	12 mm
Drill length	151 mm
Vertex angle	135°
Handle type	Cylindrical
Destination	Metal
Number included	1 pc.
Package dimensions	225.00 x 10.00 x 50.00 mm

Why Choose a 12 mm HSS Cobalt TiN Metal Drill Bit??

• High durability – HSS steel with 5% cobalt increases the drill bit’s resistance to heavy-duty use.
• TiN Coating – reduces friction, minimizes chip buildup, and promotes smoother drilling.
• 135° angle – facilitates precise hole initiation and improves guidance stability.
• 12 mm diameter – ideal for larger mounting and technical holes in metal.
• Cylindrical Chuck – fits standard drill chucks.
• Versatile applications – for workshops, garages, service centers, locksmithing, and assembly work.
• One piece per set – a convenient addition to the set in a specific size.

The DEDRA WIT12015 drill bit is a practical tool for people who don't want to waste time on weak tools that dull quickly.Thanks to its design and materials, this drill bit helps you drill holes more accurately, faster, and with greater confidence.It's a good choice for both occasional household chores and regular workshop tasks.

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