Mul-T-Lock Cronus High Security Grade 2 Single Cylinder Dead-Bolt w/Thumb Turn 2-3/8 or 2-3/4 Adjustable Backset for Commercial and Residential Metal Or Wood Doors (Stainless Steel)

Well built. Key has dimples in the side instead of teeth. I would say it’s more secure than homeowner grade locks. Key is big with a plastic head so it’s easier to find in the dark

High quality lock. Not difficult to install however if you're replacing an old dead bolt it's very possible that the hole cut in the door that the lock is mounted in is not in the proper position for this lock. Less expensive or old dead bolts are a little too close to door jam. That what happened to me. Still, this is a high quality item that I am keeping. I'll figure it out.

The locks were recommended to me because the key and the lock itself are very difficult to break into. Adding these locks onto my home has stopped people from breaking in.

Great product.

So far working realy good 👍🏼

Quality lock!

I was looking forward to installing this lock and after reading the reviews I was expecting to give it a 5-star rating, but I can't do that. First of all, the black insert (see picture) was broken. Now this did not break because it was loose in the box because it's too thick for that to happen. So either it was broke when placed in the box or this unit had been opened and then the insert was broken and put back in the box. I considered returning the lock but having installed one similiar to this, I knew this broken part would not compromise the integrity of the lock. I have a suspicion this lock had been sold and returned but it's just a suspision based on a couple of other things. The photo I uploaded of the contents of the box shows that the cylinder was not installed in the exterior cylinder housing. In order to install the cylinder the 2 philips screws have to be removed from the inside of the cylinder housing, then the cylinder could be installed, then then the housing put back together. Now, had the instructions included this, I would have understood, but they did not. The instruction diagram shows the cylinder already installed. Speaking of the instructions, they are quite poor. There is no bill of materials included and although it's fairly straight forward, there was a small washer in the plastic bag that contains the screws but nothing in the installation instructions or the diagrams make reference to this. Hence, I now have a small washer left over after the installation. Furthermore, the diagram for step 4, install strike, does not show the installation of the black (broken) strike box, and the strike plate orientation is incorrectly shown. There are markings on the strike plate showing which edge goes nearest to the door stop but if you go by the diagram in the (abysmal) instructions, you would install opposite as the large and small screws are reversed in the diagram from what they should be. As you can see in the first photo, there is also a plate that goes over the strike plate but there's no mention of this in the instructions either. All in all, the lock functions well but clearly something is amiss and requires attention.

If you're thinking $5-15 deadbolts are, at best, better than no deadbolt at all, you're correct. If you're not thinking that, you stand to be corrected. Your only online or local hardware/big-box store choice is a step up to the $35-40 price point. The Kwikset 980 is demonstrably bump and pick proof but armored just beyond slightly effective. (Since 2016, their Advanced Smartkey locks can no longer be opened with force tools.) The Schlage B60 is heavily armored but is easily bumped with a $5 key; their SC1 5-pin cylinder is pathetically obsolete. The next step up is to high-security deadbolts that run $150-200 for "light commercial" products. Real ones go for $300-400. Except for the lone wolf in the pack: The affordable Mul-T-Lock MD1 and MD2, the Cronus single and double cylinder. It's built like a tank and fitted with high security cylinders and keys having telescopic pin-within-pins, multiple shear lines and bitting. And that's just for starters. Sold here is the Junior with the five chamber 008J platform normally marketed as the 008 (was 006), known as the Classic. "Junior" is just the name for Mul-T-Lock's retail marketing program for several general purpose items from their 100's of otherwise specialized products. Among the Juniors are padlocks, plugs/cylinders, a lockset and the Cronus. The "not-Junior" products are fitted with the big-bucks ClassicPro (x86x), Interactive (206SP) or MT5+ (616B) platforms or even bigger-buck platforms. There is nothing junior about the Junior Cronus and its 008J. NOTE: The drawing and illustration images I've pulled from Mul-T-Lock docs shows two side cuts on the 006/008 key. The 008J key has a third side cut which runs through the area used in the more advanced platforms. One might presume this is to prevent locksmiths from buying blanks under the Junior program price points and cutting premium keys on the cheap. The images nonetheless present accurately the Classic lock/tumbler technology in the Junior Cronus. Concerning the bad guy standing at your home's door, you should Google "ansi grade 1 vs 2" to understand it's irrelevant in this discussion. Fully Grade 2, this Cronus is a good leap beyond any $15-40 marginally Grade 1 deadbolts you'll buy online or at the local hardware or big-box store. Your neighborhood store won't have Mul-T-Lock key blanks and cutting machines. See the Mul-T-Lock website for the local locksmiths, if any, where you live and you'll need to show your duplication authentication card. Don't throw it out with the packaging! Slsupply can provide more (now or later) than the three keys included with the Junior Cronus but not as Prime or Fulfilled by Amazon. As well, they filled my order for two locks and six keys, all keyed alike. Message them for ordering instructions. Mul-T-Lock's scale up product is their Grade 1 Hercular (HD1, HD2, HDC). If you can afford it (and you'd unlikely be here if you could), only some bragging rights is what you'll get for your cost effective and practical home owner needs vs the Cronus. I've combined a Cronus deadbolt with a Kwikset SmartKey lever on each of my outward opening steel security doors. Getting past this will require determined and appreciable destruction - a necessity when filing a breaking and entering claim with the insurance company.

This dead bolt is two steps above your standard door lock. Great security features keep me in sound mind when I am away from home. The Joe youtuber will not be able to pick this lock and gain access to your home.

Pêne dormant très lourd et très solide avec une clé très spéciale et inviolable. Je vais l'installer dans quelques jours, quand la température le permettra. Merci

2 semaines après l’installation je subi encore des invasions de domicile

I love this lock. It was easy to install, and it is a pleasure to use. I love you it doesn't matter which way you insert the key, especially when it's dark. Now it's less likely that someone can bump my lock. Fast delivery! My only concern is buying two more Mul T Locks keyed alike.

good look