Maybe I'm an idiot. I thought I read in the description that it is a multi-purpose drill (wood, steel, aluminum, etc.). But this poor thing just had the worst of it, trying to drill through steel. I started with the pilot hole then worked harder and harder until I got to this bad boy but no. Once I got there this piece just went round and round and round but hardly left any marks on the steel. Unfortunately I had to leave my project unfinished.