GUARANTEED TOUGH® AND IN VARYING LENGTHS, DEWALT® HAS A TAPE MEASURE FOR NEARLY EVERY JOB. Tougher Case. Tougher Blade Coating. Tougher Hook Connection. The DEWALT® Extended Performance (XP™) Tape Measure is Dewalts® toughest ever. The XP™ Tape Measure is built around our Dual-Core™ Technology - a patented spring system that utilizes two retracting springs in a impact-resistant, heavy-duty case.