The Trifecta fabric is a traditional heavy-duty commercial grade vinyl. Maximum Strength Warranty. Extang engineered tri-fold style tonneau cover. Fast, easy, no assembly required. No tools. Extang engineered with precision. 45Ã‚Âº steel corner brackets, commercial grade rails and I-Beam style Monster Bows provide unparalleled strength. SafetyKlamps: Extremely strong glass-filled nylon construction, will never break. Secure cab section by hand tightening thread clamps with built-in heavy-duty handle. SpeedKlamps: Rear tail section clamps operate with spring action handle for instant fasten and release. Clamp conveniently stows away inside rail when not in use MaxHinges: Ultra-strong, rugged, double pivot design made of durable glass-filled nylon and feature protective padding. Heavy-duty luggage style Hold-Tite fasteners secure the tonneau in the open position at the cab. Provide quick and easy storage when hauling large cargo.