Rain Bird BVAL50-1S Drip Irrigation 1/2" Barbed Valve, Male x Male Valve for use with 1/2" Drip irrigation tubing Top cap turns to adjust or completely shut off water flow Self-piercing design; use with 1/4" Drip tubing or insert into 1/2" or larger Drip tubing 1/2" barbed ends accept most brands of 1/2" Drip tubing Ideal way to control water flow to individual plants and planting containers Constructed of highly durable UV and chemical-resistant materials to assure long life