Coil Width: 1/2″, Length: 9,000′, Nominal Break Strength: 350 lb., Core Size: 16″ x 6″, Color: BLACK. Polypropylene strapping is the most commonly used of all strapping materials. It is light and easy to apply and recycle. Characteristics include high elongation and elongation recovery, but low retained tension. Polypropylene is an excellent choice for light duty palletizing, unitizing, carton closing and bundling. Polypropylene strapping is embossed which enhances split resistance, improves stiffness characteristics and increases joint efficiency.