Elevate your designs with a COSTUMAKERS 50 cm (20 in) two-way separating zipper in black. Featuring #10 silver metal teeth mounted on reinforced polyester tape, this heavy weight closure delivers smooth operation, corrosion resistance, and consistent dye-lot colour. Precision-cut tape maintains exact width for hassle-free installation, while ergonomic pulls make opening and closing effortless. Perfect for coats, heavy jackets & parkas, each production lot is tensile-strength and slider-fatigue tested to guarantee reliability in tough, real-world use.