For all you farmers and agricultural pros out there - this Hypro pump diaphragm bundle is exactly what you need to keep your equipment running smoothly. This bundle includes two different diaphragms that both fit Hypro D30, D50, and D70 diaphragm pumps. You get one standard 9910-650670 diaphragm made with Buna rubber material (the original equipment spec) PLUS one upgraded 9910-650671 BlueFlex diaphragm that's seriously tough stuff. The BlueFlex material is next-level durable, even under rough working conditions that would wreck regular diaphragms. They've engineered it with a special shape and thickness that reduces mechanical stress during the pump's working cycle. There's even a patented diaphragm retaining plate that minimizes the chances of the diaphragm getting caught or nicked by the plate. Whether you're spraying crops or handling other agricultural liquids, having these replacement diaphragms on hand can save you from downtime. The standard Buna rubber diaphragm is reliable and proven, while the BlueFlex option gives you that extra durability for tougher jobs. Having both in one bundle means you're covered no matter what your needs are. Keep your pumps in top condition with these quality replacement parts from a brand you can trust.