I have used this with a powerful 2200w XtremepowerUS electric jackhammer, concrete breaker with case and gloves to break up hard earth under and around stumps when digging. This is a good help and makes it easier to remove loose hard red mud in the southwestern desert. --- Update after a few years --- Are you preparing holes to plant trees or pour stakes under the patio? This is how hard, dry dirt can be loosened! (Okay, watering the area a day or two beforehand is even better, so just a shovel works, but in case you forget.) This has been my most used implement of the five since we completed certain projects and now do landscaping. , replacement trees, etc. The narrow chisel is used the least. The bollard/pole is the second most commonly used.