Elevate your designs with a COSTUMAKERS 70 cm (28 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.