Orbit 25 Pack 1/4" Drip Irrigation Barb Plug. Made from durable plastic, this plug is designed to seal the end of 1/4" distribution or soaker tubing, preventing water from leaking out. It also works effectively to plug small holes in 1/2" tubing. The double barb design provides extra holding power, ensuring a secure fit with all brands of drip tubing. Easy to install, simply press the plug into the tubing until it snaps into place. For outdoor irrigation use with cold water only.