If you’ve ever tried putting a Square Peg in a Round Hole you know it doesn’t work very well even if you use a hammer to pound it in. Fortunately there’s a solution: Drill a square hole! DIJET is a U.S. company and a worldwide supplier of metal cutting tools and high impact custom cemented carbide wear parts. Dijet Japan apparently sells the tool shown in the video only to a special spindle maker in Japan.