Bosch HC2011B5 5 pc. 3/16 in. x 6 in. SDS-Plus® Bulldog™ Rotary Hammer Bits

SDS+ masonry bits did great. I’m restoring an old detached garage in an old-tree neighborhood in Kansas City and this 100+ year old detached one-bay garage was screaming for attention. Soon, it will be restored to better than original and maintain the ole-school architectural consistency of the home and garage in this neighborhood. Getting back to the bit review, the garage sill, i.e., the 2x4 on which the vertical studs ate attached, was no longer attached to the concrete floor(slab) of the garage. Back in the day, the carpenters used a .22 cal nail gun to to attach the sill to the slab using steel nails. Fast forward 100+ years and the steel nails were long ago rusted away. So, to keep the garage from blowing away into Kansas, I drilled 3/16” holes in between each vertical stud into the 2x4 and 5” deep into the slab below, then used 1/4” Tapcon concrete screws to secure the sill to the slab. These bits worked great, drilling through the 2+4 & concrete using a Bosch Rotary Hammer Drill. One bit drilled over 30+ holes flawlessly. Before inserting the bit into the rotary hammer drill, I applied a small amount of grease on the slots at the top of the bit. So, they did their job. 5 Stars.

Exactly what you would find at Home Depot but cheaper

Excellent item that made a great gift that does the job.

Great bit, strong and long lasting with a cutting edge that holds well. I've had the best of luck with Bosch bits for concrete drilling, even in 50 year old concrete it holds up. Lasted longer than cheap options I tried, great value in the long run if you are doing lots of drilling.

There are reviews stating that these bits break too easily. I broke three before I finally got the speed setting on my hammer drill set right. Go slow, let the drill's weight do the work, and just focus on keeping the machine steady and you won't break the bits. This was my first time using my drill and I had to get the hang of the settings. No fault of the bits. It was user error that caused the bits to break. Once I got this all figured out, the bits went through my concrete slab almost like butter. Okay, not quite like butter, but certainly without much effort.

Good deal

Not what I expected. I only got a few holes out of it.

Very pleased with these bits. Almost like a similar sized wood bit drilling through wood.

Great price and service for a quality product

Good quality drill-bits with a fast delivery

I bought these for more $ from the local store before. For some reason, these from Amazon are lasting much longer before wearing out. They are really great bits.

Bosch is the best ,drills into concrete like butter. Definitely worth the buy!

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