Repair Kit, Check Ball Material Santoprene, Compatible with Grainger Part Number 3FPR2, 3FPR3, Compatible with Manufacturer Model Number 666250-EEB-C, 666251-EEB-C, 666252-EEB-C, 66625B-2EB-C, 66625B-EEB-C, 66625C-EEB-C, 666270-EEB-C, 666271-EEB-C, 666272-EEB-C, 66627B-2EB-C, 66627B-EEB-C, 66627C-EEB-C, Diaphragm Material Santoprene, Number of Check Balls 4, Number of Diaphragms 2, Number of O-Rings 5, Number of Seals 5, Valve Type Ball, Product Type Fluid End Repair Kit