ø4mm Asta® End-of-Line Pressure Compensating Dripper SpikesKey Benefits Include:Use to ensure water is evenly distributed around your drip irrigation system, delivering the same amount of water to every plant, regardless of elevation or distance.Blockages minimised with in built filterSealed to maintain pre-set discharge rates and uniformityPressure compensating dripper with a turbulent flow pathSpike allows easy and precise positioning for accurately targeting the root zone of plants