... 6. Roll Length: 500m, 1000m, 1200m, 2000m Features 1. Each dripper has its independent filter to prevent particulate matter from entering ... designed, with long flow tunnel, good turbulent flow, and even water dripping. 3. Designed with wide flow tunnel. Drippers are not ... anti-blocking and ageing resistance and long service life. 5. Dripper spacing and flow rate are accurate, with labyrinth design. The ...