Tougher Case. Tougher Blade Coating. Tougher Hook Connection. The DEWALT® Extended Performance (XP™) Tape Measure is our 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. This premium tape is ideal for heavy-duty framing and other construction measuring tasks. This tape features a reinforced housing and cast metal impact plate to absorb shock when dropped to protect internal components and the end hook. A rubber over-molding covers all contact points of the tape for improved grip. This tape also features a five screw design for improved drop resistance.