Need to drill a bigger hole but your drill chuck only opens to 3/8 of an inch? That's exactly what these Irwin Turbomax reduced shank drill bits are for. This one's a 7/16 inch diameter bit, but the shank (the part that goes in your drill) is machined down to a standard 3/8 inch size. Smart, right? So you can use it in any regular 3/8-inch chuck drill to make a bigger 7/16-inch hole. The bit itself has a self-starting tip that helps prevent the bit from \walking\ or skating around when you first start drilling – makes it way easier to get a clean, accurate hole. The shank also has three flat sides (not round) which helps prevent slipping in the chuck when you're putting some muscle into it. It's a professional-grade bit that's perfect for metal, wood, plastic – you name it. Just a solid, reliable bit that solves a common problem for DIYers and pros alike. Carded packaging keeps it safe until you're ready to use it.
