Review on 🔩 CO Z Titanium Automatic Aluminum Multiple: Cutting-Edge Efficiency and Durability Combined by David Tison

These drills are cool! Using a smaller diameter drill bit, I made a hole and then enlarged it. Ideal for drilling bolt holes in the galvanized steel rods I use to hang shade sails with cord hangers and brackets. Use lubricating oil to prevent the drill from grabbing or twisting your wrist. The punch is also effective for doing a bit of etching to start drilling. You can't drill without it. I highly recommend this set!