Features: Low manufacturing coefficient of variation (Cv) provides high performance (conforms to ISO 9261). Three color-coded flow rates: 2lph (Red), 4 lph (Black) & 8 lph (Green). Self-flushing cleaning action at low pressures. Large clog-resistant turbulent flow path. The CETA® dripper is able to be taken apart for inspection and cleaning. Anti-insect baffle to deter insect entry. Constructed of high-quality UV, chemical & fertilizer resistant materials. Fits 4mm Tube Applications: Pots, planter boxes, balcony, patios and landscape