Electrician I've had it for over a year and it's one of my favorite tools. First of all, this is not a cord and plug hammer drill, do not expect comparable performance. However, it supports a variety of attachments. The drills break through concrete effortlessly every time. Crowns take longer but still work. It even powers the ground rods, but sometimes it takes a few hammer hits when they hit the rock and then it keeps moving. Everyone I've worked with didn't have it, they've had it everβ¦