Bundle includes 4 Items: (1) Hypro D403 Diaphragm Pump with (3) 9910-800080 Buna Diaphragms. Included with this Hypro D403 Diaphragm Pump are 3 Buna Diaphragms (9910-800080) to have handy just in case your diaphragms start to wear. The Hypro 9910-D403 is a medium pressure, two diaphragm pump with positive displacement characteristics. It is the workhorse of the lawn care, landscaping, and agricultural industries. The pressure and output are designed for optimal performance for medium to large-sized sprayers. The Hypro D403 Diaphragm Pump can be adapted for male and female 1-3/8" splined shafts, 1" solid shafts, or gear reduction drive options. Commonly used on many Lesco spray rigs. Recommended Kits and Accessories (sold separately) for the Hypro D403: 9910-GR40 Pressure Regulator 9910-KIT1640 Gearbox 9910-KIT2423, 9910-KIT2388, 9910-KIT2389, D403-RK Repair Kits 9910-KIT1704 Female PTO Shaft Kit 9910-KIT2200 Male PTO Shaft Kit 9910-KIT2202 Solid Shaft Kit