The Knob Combination Security Door Lock Box Brand New, Factory Boxed  THE KNOB COMBINATION LOCK, DOOR KNOB SECURITY SYSTEM.  'THE KNOB' Security Lock can  be used as a Real Estate Lock Box, a Travel Security Lock, and it can even be Used to Childproof a Room (for children of all ages, if you get my drift). THE KNOB  WILL  KEEP  INTRUDERS  OUT! The Knob Combination Door Lock Security System will fit most round doorknobs.  It is made of a black, high-impact, plastic and has a metal locking mechanism.  The Locking Mechanism has a three number combination that You can set and easily change.  'The Knob' can be used like a Real Estate Lock-Box to store a key; provided that the doorknob has a keyhole.   Once locked into place, 'The Knob' covers access to the keyhole and also prevents the actual door knob from turning.  This allows you to keep the door unlocked while keeping others out, since the doorknob cannot be turned to open the door.  Parents, do you want to ensure that your young (or not-so-young) children cannot open certain doors (for safety, privacy, etc.)?  This is a great way to do that. FEATURES,  SPECIFICATIONS,  and  BENEFITS  to  YOU - Manufacturer: First Security Enterprises - Model: The KNOB - Made of Black, High-Impact Plastic - Has a Metal Locking Mechanism with a Three (3) Number Combination Lock - Combination is Easily Changed by YOU ... at Any Time - Secures Most Doorknobs by Preventing the Doorknob from Turning - Use it on the Outside of Your Home to Keep Others Out - Use it on the Inside of Your Home to Keep Unwanteds Safely Out of Any Room - Great for Closets, Utility Rooms, Out Buildings and Anyplace That You Want to Secure (that has a door knob) - Can be Used While Traveling (to Secure Hotel / Motel Rooms, or to Keep Your Mother-in-Law Out, etc.) - Requires No Screws or Additional Hardware - Can be Used Indoors or Outdoors - Easily Secures Rooms with Guns, Poisons, Valuables, etc. - Can Provide Parents with Privacy from Their Youngsters - You can Give Access to Certain People (for a limited time) and Never Give Them Your Keys.  Then you can change the combination. - Can be Used by:   - Real Estate Professionals   - Healthcare Providers or Care-Givers for the Mentally Challenged (for Alzheimer's patients, etc.)   - Parents Requesting Privacy   - Anyone with Need to Secure a Door with a Round Doorknob (Inside or Outside) - Comes with a Tie to Hang 'The KNOB' on the Door Knob When Not in Use - Includes Instructions on How to Change the Combination   INCLUDED  in this  PACKAGE - Brand New, 'The KNOB' Combination Door Security Lock - Door Hang Tie  (already attached) - Combination Changing Instructions ***  FAST  FIRST  CLASS  MAIL  SHIPPING  WITH  INSURANCE  *** The KNOB - Useful for Those Special Times ... or When You Just Want to Secure Your Stuff.  Order a Few and take Advantage of our Combined Shipping Discounts.   Look This Item Over, Just Don't Overlook It.