Add-It fertilizer injector, pint capacity, &frac34; FHT inlet x &frac34; MHT outlet ASAE award-winning Add-It proportioning fertilizer injector 1 pint capacity with " FHT inlet x " MHT outlet Proportioning fertilizer injector - injection rate is constant Attaches to hose bib or garden valve with hose threads A minimum flow rate of  GPM and 10 PSI is required to function