B & K ProLine 103-501RP Flowlock Hose End Locking Device

If you are having problems with your water bill from people using your hose bibb, Flow Lock by ProLine Series is an ideal and easy-to-use security device. Designed to thread onto the outside of your hose bibb, this comes with mixed magnetic keys so no one can unlock your hose bibb without you knowing. The stylish green anodized finish helps it blend in with any greenery so it doesn't call attention away from your building's exterior.