Pump Head, Compatible with Grainger Part Number 35U536, 4NA11, 4VZG1, 4VZG2, Compatible with Manufacturer Model Number 45MFH1A1SUG1, 45MJH1A1STAA, 85MFH1A1SUG1, 85MJH1A1STG1, Flow Rate (Maximum) 5 gpd, Includes Duckbills, Ferrules, Pump Tube, Material Bronze, Polyethylene, Polypropylene, Santoprene, Product Type Pump Head, Tubing Connection Size 1/4 in, Compatible with Brand Stenner