Hydro Flow In-Line Micro Irrigation Valve 3/16 in (10/Bag) Hydro Flow Micro Irrigation Valve allows you to adjust your flow rate in your drip application Fits snuggly to Hydro Flow 3/16 in tubing Hydro Flow Micro Irrigation Valve provides options for flow rate in your drip application Fits snuggly to Hydro Flow 3/16" tubing Made of reliable, black plastic