Pump Repair Kit, Compatible with Grainger Part Number 6GDU4, Compatible with Manufacturer Part Number 29200, Connection Size Not Applicable, Connection Type Not Applicable, Hose Inside Diameter Not Applicable, Hose Length Not Applicable, Includes (2) 3/8 in Stainless Steel Balls, (2) O-Rings, 5/16 in Stainless Steel Ball, Overload Spring, Screen Retainer, Operating Pressure (Maximum) 300 psi, Product Type Pump Repair Kit, Compatible with Pump Type Hydrostatic Test Pump