Hunter HEB20 Red Point-Source Drip Emitter With 1/2" FPT 2.0 GPH Flow Rate. Hunters' Point-Source Drip Emitters apply water slowly and directly at the plant to ensure every drop is put to efficient use. Now offering an improved flow consistency and muted earth tones to avoid bright spots in the landscape; these emitters provide the ability to enhance both water and operational efficiency in any micro-irrigation zone.