COSTUMAKERS Denim Closed-End zipper is built for garment sewing and repairs where a neat, reliable closure is required on everyday apparel. It is a closed-end zipper in black with #5 brass metal teeth and a 18 cm (7 in) length, suited to jeans, skirts, and medium-weight bags. Install with a zipper foot, stitch close to the teeth without catching them, and press seams after sewing to help the zipper sit flat and glide smoothly.