50pcs Adjustable Water Flow Irrigation Drippers on Stake Emitter Drip System US ship arrived 4-7 days. Durable and long lifespan, widely accepted by users Perfect for the irrigation of your flower, plants, lawn 360 degree spraying, no dead corner 8 holes at the top, adjustable water flow or closed it. Suitable for 4mm/7mm or 3mm/5mm(Inner/Outer diameter) tube