I just got back from a bolting session in Lone Pine, CA. The new rock climbing routes are turning out to be a breeze with my new Bosch 24v cordless rotary hammer. I have used the too-heavy 36v Hilti and the nearly useless 24v Hitachi with more soreness and much less satisfaction respectively. The Bosch 11225VSRH ("H" for Hauls-A__) gets it done. I mainly do 3/8 inch holes 4 inches deep in hard to medium rock and always while hanging from a rope so ease, speed and weight are the main concerns. I am glad I bought the VSRH which gave me the 3.0 Ah batteries that just keep on drilling. ....

The Bosch 11225vsrh is appropriately named "ANNIHILATOR". This drill is fairly light yet powerful. I never spend more than 10 or 15 seconds on a 3/8" x 3" hole into very hard basalt. I'm starting to prefer the Annihilator over my Ryobi ER-160 (gas rotary hammer) because it is quieter and more reliable. I was skeptical about the runtime of a battery powered drill after using gas rotary hammers, but the 3Ah batteries really do last a long time and charge in about 30 minutes with the 15 minute charger. This means that you can get continuous use with only two batteries because I doubt you will discharge the battery in 30 minutes. The Annihilator is also resistant to the elements. I work on wave swept shore lines where I'm constantly getting drenched with salt water. I duct taped over the vent holes and around the battery, and the Annihilator takes the salt water shower in stride, which is more than I can say for my gas rotary hammer which will stall out when splashed. Overall, I think this drill is fantastic. It has the longest runtime and quickest recharge of any cordless rotary hammer. At $..., it's worth every penny.

This is the best cordless Roatary Hammer I have used. It is tops for reliability and battery life.

I land survey - bought for drilling 5/8" holes into asphalt/concrete pavements to set 1/2" rebar for property corners-land monuments -- I used a 16" Milwaukee Magnum44 bit - This unit will walk right through the pavement - drilled 2-5/8" holes 14" in depth - and today drill a 1/2" hole through a 6"X12" depth concrete compressive strength test cylinder 4000 PSI - after drilling these three holes the battery level is still shows three lights. These is a very impressive tool - better than a 1/2 gas powered hammer drill. I would recommend the Bosch 11225VSRH to any one - and the name is correct - ANNIHILATOR.

I am a concrete contractor who since the cordless era has tried nearly all drills, hammer drills or any drill claiming to have the ability to drill 4-6 inch deep holes in concrete with close to the power of a 1 inch rotary hammer. Finally Bosch has done the job. The 11225 will drill 60-70 1/4 inch holes 4-6 inches deep in cured 4000 psi concrete. As most concrete contractors we use tapcons for all our form work and this rotary hammer has proven itself as a time,which means money, saver. We can now set forms on footings without generators or cords. Enough said.