Yale Key for Door Security Bolt, Grey, Pack of 1

So my autistic six year old son can dismantle or open any lock in our home with the exception of:1) The cardinal gate door lock (https://www.amazon.com/gp/product/B004RL1IMC/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1)2) this product.We’ve tried:1) Baby gates and door nob locks which worked till he was about two and ripped them out of the wall or figure out how to open.2) Door lever locks which handle our door lever handle. These worked till he was about 4.(https://www.amazon.com/gp/product/B07DKNNCH1/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1) and (https://www.amazon.com/gp/product/B07RVGYRL6/ref=ppx_yo_dt_b_search_asin_image?ie=UTF8&psc=1).3) The top of door level locks:(https://www.amazon.com/gp/product/B012BR4TGA/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)(https://www.amazon.com/gp/product/B074MQPPRM/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1)The first lock worked till he just turned six and he was strong enough to destroy the plastic latches. We moved to the metal latches whichbought us another 3 months till he figured out how to climb up using a chair/dresser/books/laundry and flip the lock at the top.The cardinal gate door lock works great for doors going out of the house (so at least we know he is in the house) as those door always open into our home but we had no internal defenses to to stop our son from day and night rampaging in all parts of our home. This lock ended that issue (for the moment anyway). It’s really versatile as you can set the lock to work from one side of the door or both sides. You can open the lock with a Phillips head screw driver but the key are a nice convenience and you can buy extra keys!The lock does require some effort to install. I bought some metric drill bits (~$15 for an 8 and 16 mm drill bit set) and used a chisel set I already have to chisel the latch and lock into the side of the door. My first install took an hour, my second one took 20 minutes.So we are happy and set for now. I’m sure our son will eventually figure out how to defeat these locks but he is getting more responsible and we should not need to locks sooon; but for now our pantry, laundry room, my daughter’s room and a storage closet are safe.Thanks for a great product!

Sturdy, easy to install, and easy to operate these locks are really something unique. I highly recommend them for adding more physical security to your home.

Easy to install, just what I wanted to secure our front door.

Lock are working well.Took less then 20 minutes to my handyman to fix it!!!!! I'm very happy I finally got that lock!

These are great. They add a level of security and also help pull an outside door tight against the draft strip improving insulation. They took some time to arrive from the UK and are slightly fiddly to fit properly, but are an excellent product.

We originally bought these in England and I was surprised to find them here, they are great for that little bit of extra security.

Easy to install and work great. Added security for my French doors

Good little semi hidden lock. Have to measure real good so lock fits perfectly. Good lock to keep kids from opening doors they aren't supposed to.