Ratings & Reviews for Bosch Bulldog 5/8-in x 12-in Alloy steel Masonry Drill Bit For SDS-plus drill

THIS DRILL BIT WILL NOT STAY SHARP

WILLNOT LAST LONG ENOUGH TO DRILL A CONCRETE BLOCK, I NEED A BAG FULL TO START A JOB. I HAVE A TOOL BOX FULL OF DULL BITS, I HAVE TO USE THESE IN MY BUSINESS. I BUY 2 FOR EACH JOB WHERE I DRILL INTO CONCRETE TO INSTALL ANCHOR BOLTS. YOU COULD SUPPLY ME WITH SOME CONCRETE BITS, I DONT KNOW WHERE TO GET THEM SHARPENED. JIMMY ROGERS

good product

these bits stay sharp and keep goin and goin love them

Good Durable 12" Bit

This was great for drilling through Concrete block, Cinder Block and it's length helped a lot. There was no sway or bend while drilling. It was the right choice for me to make.

Very Durable bit.

This was needed to get through two thicknesses of concrete block. Though I did not use it from the get go, I drilled a 1/2 opening first then used this bit. I believe it would have gone through by itself, but would have taken more time. I like to use smaller bits first in about any application. I believe this will last me quite a long time.

Disappointed

This drill bit didn't get the job done. After one hour of drilling, I didn't even make it through one inch of concrete. I am thinking about returning it for a refund.

SDS drill

drilled through the mortar on the brick facing of my home and completely through the cinder-block backing. I was able to run a power line through the hole and bring it right to my circuit box. No need to rent a hammer drill.

Good Bit,

Used for drilling concrete footers, 23 positions, and remained sharp throughout1

Poor quality bit

This was a very pricey drill bit in my opinion. Also very poor quality. I was trying to drill some holes in my concrete slab to mount some anchors. I was trying to drill five inch deep holes, but was only able to get two and a half inches deep in the first hole before the drill bit dulled out on me and quit drilling.

excellent bit for brick

Used bit to borrow six inches into brick and mortar. The bit stayed cool and cut six perfect holes without slowing down!

masonry bit

I needed to bring an electric cable from an interior wall space thru a brick wall. This bit cut through the 4" brick in seconds using a DeWalt hammer drill which I also bought at Lowe's.

Pretty Good

I would recommend it for a homeowner drilling a few holes. It has a bit of a wobble to it in a new Bosch hammer drill.

Horrible!!! Don't waste your money!!

I bought this bit for installing cable on a brick house. Bit went dull and useless before finishing one hole on standard red brick. I went back to lowes and exchanged for the Skil Masonry Bit and finished that hole plus the other 5 with no problem. Just goes to show that more expensive is not always better.

Modified it for a standard chuck

This drill bit is for a quick release chuck. I had to cut about an inch and a half off of the chuck end of it. If you don't it will wobble in a standard three prone chuck. After the modification it works great.