Netafim Self Piercing Woodpecker Pressure Compensating Junior Dripper, 0.5 GPH, Blue, 25 pcs/bag. Efficient irrigation for healthy plants and precise water delivery. https://www.hydroponicstown.com/21520-003780-netafim-self-piercing-woodpecker-pressure-compensating-junior-dripper-w-internal-check-valve-0-5gph-blue-25pcs-bag