What angle countersink bit do I need?

The angle should match your screw head. Imperial flat-head wood screws typically use an 82° countersink, while many metric screws use 90°. Check the head profile of your fasteners and pick the matching angle; combo sets often cover both. This Bosch bit is for core drilling, not standard countersinking.

Will a hex-shank countersink fit my drill?

A 1/4" hex shank fits standard quick-change chucks and impact drivers, while round-shank bits work in any keyless or keyed drill chuck. The product listing states the shank type and diameter so you can confirm fit with your drill. This bit has an SDS-Max shank.

Is this Bosch HC89 bit suitable for Indian construction materials?

Yes, this Bosch HC89 centering drill bit is designed for concrete and masonry, common materials in Indian construction. Its carbide tip and wave design ensure efficient drilling performance on these surfaces.

How does the Bosch HC89 compare to local drill bits?

The Bosch HC89 offers advanced features like a carbide-tipped active centering point and a unique wave design for up to 40% faster drilling. While local drill bits may be available, this imported bit provides a higher level of performance and durability for demanding core drilling tasks.

What is the shank type of the Bosch HC89 bit?

The Bosch HC89 features an SDS-Max shank. This system is designed for heavy-duty rotary hammers and ensures efficient power transmission and secure bit retention for core drilling applications.

Bosch HC89 Core Bit Replacement Centering Drill Bit 2 inch

Name: Bosch HC89 Core Bit Replacement Centering Drill Bit 2 inch (50.8 mm) | SDS-Max Shank for Core Drilling
Brand: Bosch
SKU: ftu3774
Price: 2128.00 INR
Availability: InStock

About this item

The Bosch HC89 Core Bit Replacement Centering Drill Bit is engineered for precision and efficiency in concrete and masonry drilling. Its all-in-one core design ensures direct power transmission, while the carbide-tipped active centering point guides the bit accurately. This bit is specifically designed for use with Bosch SDS-Max core bits, offering a significant upgrade in drilling performance.

Featuring a unique wave design, this bit transfers energy more effectively, leading to up to 40% faster drilling compared to older models. The robust construction and material ensure durability for demanding job sites. This imported tool provides professionals and DIY enthusiasts in India with access to high-performance drilling solutions.

For Indian users, this Bosch bit offers a reliable solution for creating precise core holes. While local alternatives may exist, the Bosch HC89 provides a proven combination of speed, accuracy, and durability. All customs duties and GST are included in the price, with tracked delivery via ExpressBox to your pincode within 12-14 days.

Key Features

All-in-one core transmits power directly to the end of the bit
Carbide tipped active centering bit
Unique design transfers energy thru the bit more effectively for up to 40% better drilling performance
For use with Bosch SDS-Max core bits

Why choose this product

Engineered for Efficiency and Precision

The Bosch HC89 centering drill bit stands out with its advanced wave design, engineered to boost drilling speed by up to 40%. This means less time on site and more efficient project completion. Its carbide-tipped active centering point guarantees precise hole initiation, preventing bit walk and ensuring clean, accurate results every time. This focus on performance makes it a superior choice for professionals tackling demanding concrete and masonry tasks. Imported directly, it brings global tool innovation to your Indian workshop.

Ideal For Professionals, Consider Alternatives If...

This bit is ideal for contractors, masons, and serious DIYers using SDS-Max rotary hammers for core drilling in concrete, brick, and stone. If you only need to drill small pilot holes or work with soft materials like wood, a standard twist bit or spade bit would suffice. For those without an SDS-Max hammer, this bit is incompatible. If your project requires drilling into metal, ensure the core bit is rated for metal applications.

How to use

Attach to SDS-Max Hammer — Insert the SDS-Max shank of the Bosch HC89 centering bit into the SDS-Max chuck of your rotary hammer. Ensure it clicks securely into place, indicating proper engagement for power transmission.
Position for Drilling — Place the active centering point of the HC89 bit precisely where you need to start the core hole. Hold the drill firmly and ensure it is perpendicular to the surface for a straight hole.
Engage and Drill — Activate the rotary hammer's hammer and rotation functions. Apply steady, consistent pressure. The wave design and carbide tip will efficiently cut through concrete or masonry, creating the core hole.

Example scenarios

Typical situations where Bosch HC89 Core Bit Replacement Centering Drill Bit 2 inch (50.8 mm) | SDS-Max Shank for Core Drilling helps — illustrative scenarios, not customer reviews.

Scenario 1

Illustrative example

Where it helps

Creating precise openings for plumbing or electrical conduits in concrete walls.

How this product helps

The Bosch HC89's active centering bit ensures accurate starting points, preventing bit wander. Its SDS-Max shank and wave design allow for efficient core drilling through tough concrete, making conduit installation faster and cleaner.

Scenario 2

Illustrative example

Where it helps

A contractor needs to quickly drill large diameter holes for HVAC systems in brickwork.

How this product helps

The HC89's design transfers energy effectively for up to 40% faster drilling. Paired with an SDS-Max core bit, it handles large diameter holes in brick and masonry efficiently, saving valuable project time.

Specifications & installation

Specifications

Tip Material	Carbide
Core Design	All-in-one
Flute Type	Spiral

Installation & usage

Recommended Surface	Concrete, Masonry
Usage	For use with Bosch SDS-Max core bits
Drilling Angle	120 degrees (Note: This appears to be a misinterpretation in source data; standard countersink angles are 82° or 90°. The bit itself is designed for core drilling, not standard countersinking.)
Included Components	1 Centering Drill Bit
Unit Count	1

How we compare

Feature	Bosch HC89 Core	Others
Drilling Speed	Up to 40% faster drilling with wave design	Standard drilling speeds, varies by brand
Centering Accuracy	Carbide-tipped active centering point	Basic centering, may vary
Material	Carbide-tipped	Often HSS or basic steel, varies
Shank Type	SDS-Max	Often round shank or SDS-Plus, varies
Durability	Engineered for heavy-duty use	Varies by manufacturer and material

SKU	ftu3774
GTIN	00000346077254
Brand	Bosch
Model Number	HC89
Part Number	HC89
Cutting Diameter	2 inches (50.8 mm)
Shank Type	SDS-Max
Shank Diameter	0.708 inches (18 mm)
Material	Carbide
Flute Count	2
Pattern	Solid
Color	Yellow
Item Weight	0.01 oz (0.28 g)
Package Weight	0.073 kg
Country of Origin	Not stated by manufacturer — US retail version, sourced from authorized US retailers and authorized brand partners

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Bosch HC89 Core Bit Replacement Centering Drill Bit 2 inch (50.8 mm) | SDS-Max Shank for Core Drilling

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