YKK #3 invisible nylon non-separating, closed-end zippers are ideal for use on bridal and formal gowns. Features a tooth size of 3 (3 mm), tooth color matches zipper, 3/4″ top/bottom extension and the slider has an automatic lock. Available in a variety of colors and lengths. Please note: actual colors may vary from picture due to computer setting variances. YKK is a registered trademark of YKK Corporation in Japan and other countries/regions.