These premium pumps are made from single-molded pet plastic. Use them with our amber glass bottles. Please note: the 500ml pumps and the 1l pump are sold as a single unit. These pumps are designed to fit our standard 28 410 neck size the same neck size as our smaller, 500ml bottles . If you have an older heirloom dish soap bottle, it may not fit the wider neck size Brand: Murchison-Hume Type: Bottle Pumps Delivery Time: 2-7 days