Mister Landscaper MLD-ADB Adjustable Dripper with Coupler (5 Quantity) Made in the USA Use these adjustable drippers to gently water patio and potted plants or your landscapes A 25 PSI pressure regulator (MLD-25PR) and a faucet filter (MLFF-41 of MLFF-150) are highly recommended Our 1/4-in support stakes (MLT-DST) can be used to securely hold the 1/4-in vinyl and this adjustable dripper near the plant Also use our 1/4-in tees and elbows (MLT-ATE) to run the 1/4-in vinyl in opposing directions or in tight corners