Instant-Off Pro TP/SR Automatic Shut-Off Valve for Faucets. Stops Wasted Water, Reduces Cross-Contamination,Stops Drips. Theft-Proof Locks on Faucet, Replaces Aerator. Zero Waste, Conserves Water Our professional water-saving device has an armored housing and a 3.5" stainless steel rod to activate the water. Special installation tool included. Designed for commercial use. On-Off: 3.5' Stainless Steel Push Rod For Water  Release Water Stops. Repair and Stop Drippy/Dripping Faucets.