Versico's Dual Prong Base Sheet Fasteners are designed to secure base sheets over gypsum, fibrous cement, and lightweight concrete decks and consist of a galvanized (G-90) tube, a 2.7"-diameter Galvalume® plate, and a locking staple formed from high-tensile coated steel wire. Dual Prong Fasteners are installed using Versico's stand-up Dual Prong Applicator, which holds and drives the tube into the deck and sets the wires.