Review on OTC Tools 6982DGS Drilling System by Dave Lopez

This product works great and is much cheaper than drill guides made specifically for exhaust manifolds. When I ordered I was concerned about the quality. However, the adjustable guide is very thick and strong, the pilot drills work very well, and the attachment system is very strong and holds up well. I used this tool to fix a badly off-center pilot hole. This tool was able to securely hold and guide my new hole right in the middle while the chisel was pulled through the old pilot hole. I was amazed that it worked as well as it did. This is by far the best purchase I've made from Revain.