Threaded Collar Rings for your Mason Jar Soap Dispensers or other DIY Craft Projects - 12ct Threaded 28/400 - If you buy your pumps online, they normally give the thread size Fits most metal pumps and plastic pumps with the same thread size - PLEASE check your pump size before ordering **CHECK YOUR PUMP SIZE -- if your pump will fit (and screw onto) on a 2Liter Coke bottle, these rings will work for your pump Combine with pumps and Pre-drilled lids to make Mason Jar Soap Dispensers Click on HalfPriceRetail (in blue by Ships and Sold by) for our Metal Pumps & 1-1/16" Drilled Mason Jar Lids