BOSCH HC2146 7/8 in x 8 in x 10 in Bulldog SDS-Plus Rotary Hammer Bit

Our review of the BOSCH HC2146 Bulldog SDS-Plus bits finds them best suited to tradespeople and serious DIYers who need durable masonry bits for anchoring and through-hole work. The bottom line: these bits deliver long life and consistent performance thanks to an optimized brazing and hardening process and a Bosch-made carbide tip that stands up under heavy loads. For anyone drilling concrete, block or stone regularly, the Pack of 3 offers a practical balance of value and reliability.

Key Features

• Optimized brazing: The enhanced brazing and hardening process increases resistance to wear so each bit lasts longer under frequent use.
• Faster drilling: Bosch claims up to 15 percent faster performance compared to the prior S4L design, which means quicker hole making on repetitive jobs.
• Carbide tip: The Bosch-made carbide tip is tougher and more durable under heavy loads, keeping the cutting edge longer when working in abrasive concrete and stone.
• More holes per bit: Proprietary hardening delivers more usable holes per bit before replacement is needed, reducing downtime and cost per hole.
• Designed for anchors: The tip geometry and length make these bits ideal for anchoring and through-hole applications in concrete, simplifying layout for fasteners and sleeves.

Who It's For

These Bosch Bulldog bits are aimed at electrical, plumbing and HVAC contractors, general contractors and homeowners who frequently drill into concrete or masonry and need bits that survive heavy daily use. The Pack of 3 is practical for jobs that require multiple anchor holes or for workers who prefer a spare bit on hand.

Those who only drill occasionally into softer materials or who need specialty sizes should look elsewhere, since this product is focused on masonry performance and is not a general-purpose wood or metal drilling solution.

Pros & Cons

Pros

• Durable Bosch-made carbide tip that holds up under heavy loads and abrasive conditions.
• Optimized brazing and hardening process yields more holes per bit, improving value for frequent users.
• Noticeably faster cutting speed versus older designs, which saves time on repetitive drilling.

Cons

• Length and sharpness receive mixed feedback from users, so results may vary depending on material and technique.

Specifications

Model	BOSCH HC2146 Bulldog SDS-Plus
Shank type	SDS-Plus
Diameter	7/8 in
Overall length	8 in (cutting length) x 10 in (pack length)
Pack quantity	3 bits per pack
Primary use	Anchoring and through-hole applications in concrete

Our Verdict

For professionals and serious DIYers who drill masonry regularly, the BOSCH HC2146 Bulldog SDS-Plus bits are a sensible buy because they combine a tough Bosch carbide tip with a hardening process that extends life and productivity. The Pack of 3 offers good value for repetitive anchoring work and keeps downtime low by delivering consistent performance and faster cutting than older designs.

Frequently Asked Questions

Are these bits compatible with SDS-Plus rotary hammers?
Yes, the HC2146 bits use an SDS-Plus shank and fit SDS-Plus rotary hammers and hammer drills designed for that interface.

What materials are these best for?
They are optimized for concrete, block and stone, and are intended for anchoring and through-hole masonry work.

How many bits come in a pack?
This listing supplies a pack of three bits, which is useful for multiple holes or having a spare on the job.