Disable the Door Knob/Faucet/Valve - The device is made of stainless steel. It is designed to cover and lock around your door knob and prevent the knob from turning by locking out access to the knob and keyhole. Applicable to Most Standard Door Knobs/Handwheels - Fits round, tulip, and oval door knobs; not suitable for lever door handles. Suitable for faucets or tanks with handwheel valves. Purpose - Can be used on the exterior or interior side of the knob. Use when leaving the house to add extra security. Use while staying in a hotel or sleeping to secure the exterior knob. Helps prevent individuals, such as those with dementia, from wandering. Helps prevent children from operating the door knob or handwheel and unauthorized operation. Easy to Install, Carry, and Store - Simply place the device over the door knob, lock it, and go. Designed in a compact size. Includes a pouch for storage and portability. The pouch allows the device to be hung on a door handle or door stopper for easy access. Color: Black + Silver Material: Stainless Steel Type: With Padlock Package Contents: 1 x Door Handle Lock Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.