Disable the Door Knob/Faucet/Valve - The device is made of stainless steel. It is designed to cover and lock around your door knob, preventing 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. Intended Use - Can be used on the exterior or interior side of the knob. Use when leaving the house to add extra security by locking the knob. Can be used in homes or hotels during sleep for added security by locking the exterior knob. Helps prevent individuals, such as those with dementia, from wandering out. Helps prevent children from operating door knobs or handwheels and unauthorized access. Easy to Install, Carry, and Store - Simply place the device over the door knob, lock it, and go. Designed in a compact, handy size. Includes a storage pouch. The pouch allows the device to be stored and 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 Only the above package content; other products are not included. Note: Light reflection and different displays may cause slight variations in the color of the item in the picture compared to the real thing. Measurement may vary by +/- 1-3 cm.