I bought two pieces of 1/2" drill bit for a project that required drilling 40 holes in 1018 steel that was 1/2" to 2" thick. The Drill ran oiled while cutting at 390rpm and cleaned the shavings with compressed air. Good clean holes for the whole project from one drill. No pilot holes were used, the split tip did the job. In the end I was pleasantly surprised with that Chisel.The project is complete and the chisel is still sharpened at the factory.I would buy this tool again, great tool at a great price.