Name: Bosch Bulldog 1-in x 18-in Alloy steel Masonry Drill Bit For SDS-plus drill
Brand: Bosch
SKU: 50429558
Price: 41.98 USD
Availability: InStock
Rating: 4.7 (103 reviews)

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Carbide tipped for long life in tough applications. Centric tip ensures quick starts in concrete. Wear mark alerts user when tip wears beyond ANSI specification. Bit runs cooler thanks to improved flute design.

Optimized brazing and hardening process for long life
15% faster (compared to S4L)
Bosch-made carbide tip is tougher and more durable under heavy loads
Proprietary Bosch hardening process results in more holes per bit
Ideal for anchoring and through-hole applications in concrete
4-flute design for fast dust removal
Centric tip for optimal hole geometry

General
Series Name	Bulldog	Case Type	N/A (no case)
Type	Percussion/Rotary	Shank Type	SDS-plus
Material	Alloy steel	Tip Material	Carbide
Package Quantity	1

Dimensions
Bit Diameter (Inches)	1-in	Maximum Drilling Depth	16-in
Bit Length	18-in	Shank Size	SDS-plus

Features
Set/Individual	Individual

Compatibility
Brand/Model Compatibility	Fits most SDS-plus rotary hammers	For Use on Concrete	Yes
Compatible Tool	SDS-plus drill	For Use on Brick	Yes
For Use on Stone	Yes	For Use on Tile	No
For Use on Wood	Yes	For Use on Rebar	No

Warranty
Warranty	None

Certifications
CA Residents: Prop 65 Warning(s)	No

Miscellaneous
UNSPSC	27111500

Check out the Best Selling Masonry Drill Bits on Lowes.com

Review

4.7 out of 5

103 Reviews

94% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The masonry drill bit is a durable and high-performing tool that efficiently drills through a variety of materials, including concrete, brick, and cinder blocks. Users report the bit maintains its sharpness and effectiveness even after multiple uses, and its long length allows access to hard-to-reach areas. The product is praised for its strength, speed, and versatility, making it a reliable choice for both professional and DIY applications.

Customer review summary generated by AI, including incentivized reviews.

103 Customer Reviews

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Great product. Great Price

Would Recommend

It’s a hard to find item. I’m thankful Lowe’s has it available online.

UB40October 9, 2025
From Bulldog 1_SLASH_4-in x 18-in Alloy steel Masonry Drill Bit For SDS-plus drill Verified Purchaser

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Would Recommend

Makes a perfect hole to pass through 3/4" EMT conduit for your electrical wire work

KevinJuly 9, 2024
From Bulldog 7_SLASH_8-in x 18-in Alloy steel Masonry Drill Bit For SDS-plus drill Verified Purchaser

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Worked great to get a pilot hole through brick

A little pricey

The TimSeptember 14, 2023
From Bulldog 1_SLASH_4-in x 18-in Alloy steel Masonry Drill Bit For SDS-plus drill Verified Purchaser

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Long

Good product. It is long enough to reach those hard to get areas.

Sparky540November 2, 2022
From Bulldog 1_SLASH_4-in x 18-in Alloy steel Masonry Drill Bit For SDS-plus drill Verified Purchaser

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Bosch Bulldog 1-in x 18-in Alloy steel Masonry Drill Bit For SDS-plus drill

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