Name: Bosch Bulldog Tough 4-Cutter 1/2-in x 6-in Alloy steel Masonry Drill Bit For SDS-plus drill
Brand: Bosch
SKU: 1000578279
Price: 13.98 USD
Availability: InStock
Rating: 4.4 (418 reviews)

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The Bosch Bulldog™ Tough Rotary Hammer Bit features a four-cutter head, for an SDS-plus® with fast drilling and enhanced durability in concrete with rebar. This bit delivers 2X life vs. standard SDS-plus® bits. These bits feature a four-cutter design, helping to prevent the bit from getting stuck in rebar, one cutting edge that hits the rebar no matter the angle, so it doesn’t get stuck and break. The four-flute design aggressively pulls dust away from the work, for fast drilling and longer bit life. This bit provides accurate centering, making it ideal for anchoring.

Durable SDS-plus® bit design – features a four-cutter head with four-flute technology, for 2X life in concrete with rebar and hard aggregate
Four-cutter head design – ensures that one angle is always hitting rebar to help prevent the bit getting stuck
Four-flute bit technology – aggressively pulls dust away from hole, for faster and cooler drilling
Accurate anchoring – ideal for drilling anchoring holes, the centering tip provides precise starts
Bosch-made carbide tips – advances consistent, quality material
Turn-angle head – provides large and short dust channels for enhanced drilling speed
Premium manufacturing – made with quality materials and innovative engineering

General
Series Name	Bulldog Tough 4-Cutter	Case Type	N/A (no case)
Type	Rotary	Shank Type	SDS-plus
Material	Alloy steel	Tip Material	Carbide
Package Quantity	1

Dimensions
Bit Diameter (Inches)	1/2-in	Maximum Drilling Depth	4-in
Bit Length	6-in	Shank Size	SDS-plus

Features
Lowe's Exclusive	Yes	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	No	For Use on Rebar	Yes

Warranty
Warranty	None

Certifications
CA Residents: Prop 65 Warning(s)	No

Miscellaneous
UNSPSC	27111500

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Review

4.4 out of 5

418 Reviews

86% Recommend this product

Ratings may include incentivized customer reviews.

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What Customers Are Saying

Customers overwhelmingly praise this drill bit for exceptional performance in concrete and masonry, with most reporting reliable, efficient drilling through tough materials like aged concrete and cinder block. The 4-cutter design is frequently noted for superior speed, with users completing 3-inch holes rapidly and drilling 25+ holes without degradation. Many emphasize durability and edge retention, describing the bit as sturdy and long-lasting through heavy use. A small subset reported premature dulling after few holes, though these experiences represent a minor fraction. Overall, reviewers consider this a worthwhile investment for demanding drilling applications.

Customer review summary generated by AI, including incentivized reviews.

418 Customer Reviews

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Bosch bits

Would Recommend

Best concrete bit to go through hard concrete

FandStilingSeptember 5, 2026
From Bulldog Tough 4-Cutter 5_SLASH_32-in x 6-in Alloy steel Masonry Drill Bit For SDS-plus drill Verified Purchaser

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Works as it was supposed to, little to no trouble for my purposes.

EricSeptember 4, 2026
From Bulldog Tough 4-Cutter 5_SLASH_16-in x 6-in Alloy steel Masonry Drill Bit For SDS-plus drill Verified Purchaser

Was this Review Helpful ?

It’s pretty decent.

Would Recommend

Decent bit. Just make sure you don’t hit anything.

BryanSeptember 3, 2026
From Bulldog Tough 4-Cutter 3-1_SLASH_16-in x 6-in Alloy steel Masonry Drill Bit For SDS-plus drill Verified Purchaser

Was this Review Helpful ?

good bit

Would Recommend

used to drill into 63 year old brick. used a 1" hammer drill and chipped the brick due to lack of experience. second hole was spot on. still about three seconds, pull drill out, dip in a cup of water for cooling, blew out hole with a straw, and repeated until holes. screws went in flawlessly.

RubedawgAugust 20, 2026
From Bulldog Tough 4-Cutter 5_SLASH_32-in x 6-in Alloy steel Masonry Drill Bit For SDS-plus drill

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/a348c9c9-797a-5570-877e-9cc591c4da18

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/0f447cd1-e29a-51a7-aa4a-b97747c18fae

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/f0e6a029-30fa-501e-89b1-f4cf4a2b66b0

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/f5f2b3f5-1ab9-50cb-9187-11e851fd5194

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/d0df9de7-3e52-5044-923e-7155d7ec2f73

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/2bfabaf0-881a-519e-b046-9794f8fd9d0a

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wrong size, says 3 1/16 " , but it's 3/16 " .

Would Recommend

wrong size, says 3 1/16 " , but it's 3/16 " .

maxlowAugust 18, 2026
From Bulldog Tough 4-Cutter 3-1_SLASH_16-in x 6-in Alloy steel Masonry Drill Bit For SDS-plus drill

https://photos-us.bazaarvoice.com/photo/2/cGhvdG86bG93ZXM/9b7dd4ff-d1bb-5af2-aec0-532e0a478487

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		Name	Current Item BoschBulldog Tough 4-Cutter 1/2-in x 6-in Alloy steel Masonry Drill Bit For SDS-plus drill
		Ratings	418
		Material	Alloy steel
		Bit Diameter (Inches)	1/2-in
		For Use on Brick
Tapcon3-1/16-in x 7-in Carbide Masonry Drill Bit For Hammer drill	BoschBulldog Tough 4-Cutter 1/2-in x 12-in Alloy steel Masonry Drill Bit For SDS-plus drill	Tapcon3/8-in x 8-in Carbide Masonry Drill Bit For Hammer drill	BoschBlue Xtreme 7 -Piece Assorted Carbide Masonry Drill Bit Set For Rotary drill/Impact driver	Tapcon1/2-in x 10-in Carbide Masonry Drill Bit For Hammer drill	BoschBulldog Xtreme8 8-Cutter 5/8-in x 8-in Carbide Masonry Drill Bit For SDS-plus drill	BoschBulldog Tough 4-Cutter 3/4-in x 12-in Alloy steel Masonry Drill Bit For SDS-plus drill	BoschMultiConstruction 1/2-in x 6-in Alloy steel Masonry Drill Bit For Rotary drill/Impact driver	BoschBlue Xtreme 1/2-in x 12-in Carbide Masonry Drill Bit For Hammer drill
468	398	467	742	468	206	393	477	743
Carbide	Alloy steel	Carbide	Carbide	Carbide	Carbide	Alloy steel	Alloy steel	Carbide
3/16-in	1/2-in	3/8-in	Assorted	1/2-in	5/8-in	3/4-in	1/2-in	1/2-in