MAGNETIC DRILLS Unibor is the flagship American brand of Sheffield, England based manufacturer OSL Cutting Technologies, which acquired Unibor’s parent company (Universal Drilling & Cutting Equipment) in 2019. With multiple manufacturing sites, our tool-making heritage dates all they way back to 1864, and includes products like: Step Drills & Cone Drills Annular Cutters & Magnetic Drills Countersinks Reamers Threading Tools: Taps & Drill/Tap Combos TCT Hole Saws Chop Saws, Circular Saws, and Blades