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Most importantly, the drill made fast work of a number of 1/2 holes to a depth of 9 to 10 inches in concrete. I have been very pleased with this Bosch rotary hammer. As delivered, the external body was in like new condition with case. I found it was best to use only moderate pressure to get the fastest drilling rate in the concrete - you can see the drill make visible progress into the hole. The drill gear box does get quite warm after 3 to 4 holes, so I let it cool down between sets.
I bought these chipping hammers because they were so cheap, but they both fell apart the first day we used them and I had to run out and buy new ones and pay full price for the new ones. I bought a different brand instead and they seem to be holding up just fine. My fault, you get what you pay for.
Always I say I like these tools because are the same as brand new and real chep cheper.- is better than buying outside no in the store I say like pawnshop or in yard sale
I purchased one of these reconditioned "bull-dogs" wich I really like; for a smaller roto-hammer it really works great. I was a little worried about buying a reconditioned product, but it didn't have a single mark on it, came in a brand new case, and was "indestinguishable" from a new product. I really baby mine at home, it's rarely used; but we really "man handle" one at work and it continues to perform great.I also purchased one of those "SDS chuck adapters" from CPO Bosch (for about $50) which I would recommend, so that if necessary, an operator can use a non-SDS type drill bit.Purchase without hesitation.Bruce Q.NE Illinois
When I used it to drill holes for a couple of anchors, it took less than a minute to do it. My 70 year old basement walls have "river rock" aggregate, including granite rocks an inch in diameter from the Ohio River basin.A shelving contractor told me that his good hammer drill was "no good" at drilling holes for 1/4" wall anchors into it. He borrowed one of those 22 caliber shell hammers to shoot nails directly into the wall to mount the shelves.I just bought a reconditioned 11224VSR at the least expensive price, and a couple 1/4" bits from one of the vendors here. As a matter of fact, I didn't have the depth gauge (it is metal, not plastic) rotated correctly, and it slipped through (so watch out for that) the guide before I realized what was happening, so I ended up with a deeper hole than I intended very quickly.I love this tool. I don't have a 1/2" hand drill, so I bought the 3 jaw chuck so I can use 1/2" bits, too.
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