Need a tough, reliable replacement zipper for a heavy winter coat, parka, or down jacket? This YaHoGa #8 zipper is exactly what you're looking for. It's a two-way separating zipper, meaning both sides completely come apart, which is standard for jackets. The teeth are made from durable resin plastic, they're large (#8 size, about 8mm wide), and they zip very smoothly. The total length is 36 inches for the teeth part (37 inches end-to-end). It's left-handed (the slider is on the left side when the jacket is worn). This is a professional-quality zipper that's much stronger than the flimsy ones on cheap garments. It's perfect for sewing a new coat, replacing a broken zipper on your favorite jacket, or for other heavy-duty crafting projects like bags or tents. Just make sure you want a large, strong zipper – this isn't for lightweight fabrics. A trusted choice for serious sewers.